{
    "$defs": {
        "BoundaryDefinition": {
            "additionalProperties": false,
            "description": "Goal-and-scope, system boundary, scenario, allocation, or model definition used as the reference for a boundary-defined result",
            "properties": {
                "allocation_rule_value": {
                    "description": "Allocation, partitioning, substitution, cut-off, or burden-sharing rule applied in the boundary definition",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "boundary_identifier_value": {
                    "description": "Identifier for a boundary, scope, scenario, or modelling reference definition",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "boundary_name_value": {
                    "description": "Name of the boundary, scope, scenario, or modelling definition",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "boundary_type_value": {
                    "$ref": "#/$defs/BoundaryTypeEnum",
                    "description": "Type of boundary or scope definition"
                },
                "characterization_model_value": {
                    "description": "Characterization model, factor set, time horizon, scenario, or model version used to convert inputs into the reported result",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "data_quality_reference_value": {
                    "description": "Reference to a data quality assessment associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "data_source_scope_value": {
                    "description": "Temporal, geographical, technological, or population scope of the data sources used by the boundary definition",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "excluded_processes_value": {
                    "description": "Processes, stages, flows, compartments, or elements excluded from the boundary",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "goal_scope_definition_value": {
                    "description": "Goal and scope definition or equivalent statement that defines the assessed value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "impact_method_value": {
                    "description": "Impact assessment, characterization, scoring, or calculation method used for a modelled result",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "included_processes_value": {
                    "description": "Processes, stages, flows, compartments, or elements included in the boundary",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "procedure_standard_value": {
                    "description": "Standardized procedure, protocol, guide, or method document",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "procedure_version_value": {
                    "description": "Version, edition, revision, or publication date of the procedure",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "uncertainty_reference_value": {
                    "description": "Reference to an uncertainty statement, uncertainty budget, or uncertainty component associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "BoundaryDefinition",
            "type": "object"
        },
        "BoundaryTypeEnum": {
            "description": "Types of boundary or scope definitions",
            "enum": [
                "system_boundary",
                "goal_and_scope",
                "functional_unit",
                "allocation_boundary",
                "scenario_definition",
                "temporal_boundary",
                "geographical_boundary",
                "technological_boundary",
                "characterization_model",
                "other"
            ],
            "title": "BoundaryTypeEnum",
            "type": "string"
        },
        "CalibrationRecord": {
            "additionalProperties": false,
            "description": "Calibration, comparison, verification, or check record contributing to a traceability chain",
            "properties": {
                "calibrated_item_identifier_value": {
                    "description": "Identifier of the instrument, sensor, measuring system, reference material, standard, or software item calibrated or checked",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibrated_item_type_value": {
                    "description": "Type of calibrated item",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_certificate_identifier_value": {
                    "description": "Identifier of the calibration certificate or equivalent evidence record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_certificate_url_value": {
                    "description": "URL for the calibration certificate or equivalent evidence record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_date_value": {
                    "description": "Date on which the calibration was performed",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_due_date_value": {
                    "description": "Date by which recalibration is due",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_identifier_value": {
                    "description": "Identifier for a calibration, comparison, verification, or check record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_interval_value": {
                    "description": "Calibration interval or recalibration frequency",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_laboratory_accreditation_value": {
                    "description": "Accreditation identifier, scope, or body associated with the calibration provider",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_laboratory_value": {
                    "description": "Laboratory, organization, or facility that performed the calibration",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_method_value": {
                    "description": "Calibration method, procedure, comparison method, or protocol used",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_result_value": {
                    "description": "Calibration result, correction, factor, or outcome statement",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_status_value": {
                    "$ref": "#/$defs/CalibrationStatusEnum",
                    "description": "Validity or acceptance status of the calibration record"
                },
                "environmental_conditions_value": {
                    "description": "Environmental, operating, or procedural conditions relevant to traceability",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "uncertainty_reference_value": {
                    "description": "Reference to an uncertainty statement, uncertainty budget, or uncertainty component associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "CalibrationRecord",
            "type": "object"
        },
        "CalibrationStatusEnum": {
            "description": "Status of a calibration or equivalent record",
            "enum": [
                "valid",
                "valid_with_restrictions",
                "due",
                "expired",
                "failed",
                "superseded",
                "not_available"
            ],
            "title": "CalibrationStatusEnum",
            "type": "string"
        },
        "ChainCompletenessEnum": {
            "description": "Completeness of a traceability chain",
            "enum": [
                "complete",
                "partial",
                "inferred",
                "gap_identified",
                "unavailable"
            ],
            "title": "ChainCompletenessEnum",
            "type": "string"
        },
        "ComparabilityAssessment": {
            "additionalProperties": false,
            "description": "Assessment of whether two reported values are metrologically comparable through the same reference basis, measurand definition, method, or boundary",
            "properties": {
                "comparability_assessment_identifier_value": {
                    "description": "Identifier for an assessment of metrological comparability",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "comparability_decision_value": {
                    "$ref": "#/$defs/ComparabilityDecisionEnum",
                    "description": "Decision about whether the compared results are metrologically comparable"
                },
                "comparability_rationale_value": {
                    "description": "Rationale for the comparability decision, including relevant mismatches or limitations",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "left_traceability_reference_value": {
                    "description": "Reference to the first traceability statement, chain, or basis being compared",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "right_traceability_reference_value": {
                    "description": "Reference to the second traceability statement, chain, or basis being compared",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "same_measurand_definition_value": {
                    "description": "Whether the compared results use the same measurand or operational definition",
                    "type": [
                        "boolean",
                        "null"
                    ]
                },
                "same_method_or_boundary_value": {
                    "description": "Whether the compared results use the same method-defined or boundary-defined reference",
                    "type": [
                        "boolean",
                        "null"
                    ]
                },
                "same_reference_basis_value": {
                    "description": "Whether the compared results are traceable to the same reference basis",
                    "type": [
                        "boolean",
                        "null"
                    ]
                },
                "uncertainty_reference_value": {
                    "description": "Reference to an uncertainty statement, uncertainty budget, or uncertainty component associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "ComparabilityAssessment",
            "type": "object"
        },
        "ComparabilityDecisionEnum": {
            "description": "Decision values for metrological comparability assessments",
            "enum": [
                "comparable",
                "comparable_with_conditions",
                "not_comparable",
                "insufficient_information",
                "not_evaluated"
            ],
            "title": "ComparabilityDecisionEnum",
            "type": "string"
        },
        "CompetenceRecord": {
            "additionalProperties": false,
            "description": "Competence, accreditation, validation, proficiency, or quality system evidence supporting traceability",
            "properties": {
                "accreditation_body_value": {
                    "description": "Accreditation body, authority, or organization responsible for the competence record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "accreditation_identifier_value": {
                    "description": "Accreditation, authorization, scope, or certificate identifier",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "competence_basis_value": {
                    "description": "Basis for competence, such as accreditation, proficiency testing, validation, authorization, or quality management system",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "competence_provider_value": {
                    "description": "Laboratory, person, organization, facility, or software provider whose competence is documented",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "competence_record_identifier_value": {
                    "description": "Identifier for a competence, accreditation, authorization, or quality system record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "competence_scope_value": {
                    "description": "Scope of competence, accreditation, validation, or authorization",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "competence_status_value": {
                    "$ref": "#/$defs/CompetenceStatusEnum",
                    "description": "Status of the competence or accreditation record"
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_valid_from_value": {
                    "description": "Start date of validity for the reference entity or assigned value",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_valid_until_value": {
                    "description": "End date of validity for the reference entity or assigned value",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "CompetenceRecord",
            "type": "object"
        },
        "CompetenceStatusEnum": {
            "description": "Status values for competence and accreditation records",
            "enum": [
                "active",
                "suspended",
                "expired",
                "withdrawn",
                "not_applicable",
                "not_available"
            ],
            "title": "CompetenceStatusEnum",
            "type": "string"
        },
        "EvidenceReference": {
            "additionalProperties": false,
            "description": "Supporting evidence record for a traceability statement, chain, calibration, method, boundary, reference material, or competence record",
            "properties": {
                "evidence_date_value": {
                    "description": "Date associated with supporting evidence",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_description_value": {
                    "description": "Description of supporting evidence",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_identifier_value": {
                    "description": "Identifier for supporting evidence",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_provider_value": {
                    "description": "Provider, author, laboratory, supplier, or organization responsible for supporting evidence",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_type_value": {
                    "$ref": "#/$defs/EvidenceTypeEnum",
                    "description": "Type of supporting evidence"
                },
                "evidence_url_value": {
                    "description": "URL for supporting evidence",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_version_value": {
                    "description": "Version, edition, or revision of supporting evidence",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "EvidenceReference",
            "type": "object"
        },
        "EvidenceTypeEnum": {
            "description": "Types of evidence used to support traceability",
            "enum": [
                "calibration_certificate",
                "reference_material_certificate",
                "test_report",
                "method_standard",
                "procedure_document",
                "accreditation_record",
                "proficiency_test",
                "validation_report",
                "dataset_reference",
                "software_record",
                "boundary_document",
                "supplier_declaration",
                "other"
            ],
            "title": "EvidenceTypeEnum",
            "type": "string"
        },
        "MeasurementProcedure": {
            "additionalProperties": false,
            "description": "Measurement, calculation, sampling, calibration, analytical, or modelling procedure used to define or transfer a value",
            "properties": {
                "environmental_conditions_value": {
                    "description": "Environmental, operating, or procedural conditions relevant to traceability",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "method_parameters_value": {
                    "description": "Key method parameters, such as extraction conditions, incubation time, temperature, calibration model, or reporting rule",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "operator_or_software_value": {
                    "description": "Operator, laboratory, instrument system, model, or software used to apply the procedure",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "procedure_description_value": {
                    "description": "Description of the procedure and how it defines or transfers the value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "procedure_identifier_value": {
                    "description": "Identifier of a measurement, calculation, sampling, calibration, analytical, or modelling procedure",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "procedure_name_value": {
                    "description": "Name of the procedure or method",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "procedure_role_value": {
                    "$ref": "#/$defs/ProcedureRoleEnum",
                    "description": "Role of the procedure in establishing traceability"
                },
                "procedure_standard_value": {
                    "description": "Standardized procedure, protocol, guide, or method document",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "procedure_uri_value": {
                    "description": "URI or URL identifying the procedure",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "procedure_version_value": {
                    "description": "Version, edition, revision, or publication date of the procedure",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "sampling_or_specimen_definition_value": {
                    "description": "Definition of the sample, specimen, item, batch, population subset, or material matrix used by the method",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "uncertainty_reference_value": {
                    "description": "Reference to an uncertainty statement, uncertainty budget, or uncertainty component associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "MeasurementProcedure",
            "type": "object"
        },
        "MeasurementStandard": {
            "additionalProperties": false,
            "description": "Measurement standard, artefact, instrument standard, or unit realization used in a calibration hierarchy",
            "properties": {
                "assigned_value_uncertainty_value": {
                    "description": "Uncertainty associated with the assigned value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "assigned_value_unit_value": {
                    "description": "Unit associated with the assigned value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "assigned_value_value": {
                    "description": "Assigned value of a measurement standard, reference material, calibrator, or conventional reference",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "calibration_records": {
                    "description": "Calibration, comparison, verification, or check records that support traceability",
                    "items": {
                        "$ref": "#/$defs/CalibrationRecord"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurement_standard_identifier_value": {
                    "description": "Identifier for a measurement standard, artefact, instrument standard, or realization",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurement_standard_level_value": {
                    "description": "Position of the measurement standard in the calibration hierarchy",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurement_standard_name_value": {
                    "description": "Name of the measurement standard",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurement_standard_owner_value": {
                    "description": "Owner, custodian, laboratory, or institute responsible for the measurement standard",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurement_standard_type_value": {
                    "$ref": "#/$defs/MeasurementStandardTypeEnum",
                    "description": "Type or level of measurement standard"
                },
                "quantity_kind_value": {
                    "description": "Kind of quantity or indicator being traced, such as mass, length, concentration, carbon footprint, or circularity indicator",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "quantity_unit_value": {
                    "description": "Unit in which the value or measurand is expressed",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_valid_from_value": {
                    "description": "Start date of validity for the reference entity or assigned value",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_valid_until_value": {
                    "description": "End date of validity for the reference entity or assigned value",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "MeasurementStandard",
            "type": "object"
        },
        "MeasurementStandardTypeEnum": {
            "description": "Types or hierarchy levels of measurement standards",
            "enum": [
                "international_standard",
                "national_standard",
                "primary_standard",
                "secondary_standard",
                "reference_standard",
                "working_standard",
                "transfer_standard",
                "instrument_standard",
                "unit_realization",
                "other"
            ],
            "title": "MeasurementStandardTypeEnum",
            "type": "string"
        },
        "MetrologicalTraceability": {
            "additionalProperties": false,
            "description": "Root container for metrological traceability statements and supporting records",
            "properties": {
                "boundary_definitions": {
                    "description": "Boundary, goal-and-scope, scenario, or model definitions used as traceability references",
                    "items": {
                        "$ref": "#/$defs/BoundaryDefinition"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "calibration_records": {
                    "description": "Calibration, comparison, verification, or check records that support traceability",
                    "items": {
                        "$ref": "#/$defs/CalibrationRecord"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "comparability_assessments": {
                    "description": "Assessments of whether traceability statements support meaningful comparison",
                    "items": {
                        "$ref": "#/$defs/ComparabilityAssessment"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "competence_records": {
                    "description": "Competence, accreditation, validation, or quality system records supporting traceability",
                    "items": {
                        "$ref": "#/$defs/CompetenceRecord"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "evidence_references": {
                    "description": "Evidence records referenced by the metrological traceability model",
                    "items": {
                        "$ref": "#/$defs/EvidenceReference"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "measurement_procedures": {
                    "description": "Measurement, calculation, sampling, calibration, analytical, or modelling procedures used for traceability",
                    "items": {
                        "$ref": "#/$defs/MeasurementProcedure"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "measurement_standards": {
                    "description": "Measurement standards, artefacts, instruments, and realizations used in traceability",
                    "items": {
                        "$ref": "#/$defs/MeasurementStandard"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "reference_entities": {
                    "description": "Reference entities, standards, methods, instruments, datasets, or organizations used in traceability",
                    "items": {
                        "$ref": "#/$defs/ReferenceEntity"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "reference_materials": {
                    "description": "Reference materials and certified reference materials used in traceability",
                    "items": {
                        "$ref": "#/$defs/ReferenceMaterial"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "traceability_bases": {
                    "description": "Reference bases used to establish metrological traceability",
                    "items": {
                        "$ref": "#/$defs/TraceabilityBasis"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "traceability_chains": {
                    "description": "Traceability chains or networks available for reuse by one or more traceability statements",
                    "items": {
                        "$ref": "#/$defs/TraceabilityChain"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "traceability_statements": {
                    "description": "Reusable traceability statements that can be embedded or referenced by other CE-RISE data models",
                    "items": {
                        "$ref": "#/$defs/TraceabilityStatement"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                }
            },
            "title": "MetrologicalTraceability",
            "type": "object"
        },
        "ProcedureRoleEnum": {
            "description": "Roles of procedures in a traceability statement",
            "enum": [
                "measurement",
                "calibration",
                "sampling",
                "analytical_method",
                "calculation",
                "modelling",
                "quality_control",
                "reporting",
                "other"
            ],
            "title": "ProcedureRoleEnum",
            "type": "string"
        },
        "ReferenceEntity": {
            "additionalProperties": false,
            "description": "Generic reference entity used in a traceability statement, chain, procedure, calibration, or boundary definition",
            "properties": {
                "assigned_value_uncertainty_value": {
                    "description": "Uncertainty associated with the assigned value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "assigned_value_unit_value": {
                    "description": "Unit associated with the assigned value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "assigned_value_value": {
                    "description": "Assigned value of a measurement standard, reference material, calibrator, or conventional reference",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_entity_identifier_value": {
                    "description": "Identifier for a reference entity, material, standard, instrument, facility, method, or dataset",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_entity_name_value": {
                    "description": "Name of the reference entity",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_entity_provider_value": {
                    "description": "Provider, custodian, producer, laboratory, institute, or publisher of the reference entity",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_entity_type_value": {
                    "$ref": "#/$defs/ReferenceEntityTypeEnum",
                    "description": "Type of reference entity"
                },
                "reference_entity_uri_value": {
                    "description": "URI or URL for the reference entity",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_valid_from_value": {
                    "description": "Start date of validity for the reference entity or assigned value",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_valid_until_value": {
                    "description": "End date of validity for the reference entity or assigned value",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "ReferenceEntity",
            "type": "object"
        },
        "ReferenceEntityTypeEnum": {
            "description": "Types of reference entities used in traceability records",
            "enum": [
                "si_definition",
                "national_standard",
                "international_standard",
                "working_standard",
                "instrument",
                "reference_material",
                "calibration_certificate",
                "method_document",
                "dataset",
                "software",
                "boundary_document",
                "organization",
                "other"
            ],
            "title": "ReferenceEntityTypeEnum",
            "type": "string"
        },
        "ReferenceMaterial": {
            "additionalProperties": false,
            "description": "Reference material or certified reference material used to establish traceability",
            "properties": {
                "assigned_value_uncertainty_value": {
                    "description": "Uncertainty associated with the assigned value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "assigned_value_unit_value": {
                    "description": "Unit associated with the assigned value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "assigned_value_value": {
                    "description": "Assigned value of a measurement standard, reference material, calibrator, or conventional reference",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "certificate_identifier_value": {
                    "description": "Identifier of the reference material certificate",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "certificate_url_value": {
                    "description": "URL for the reference material certificate",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "certified_property_value": {
                    "description": "Certified or assigned property of the reference material",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "matrix_or_material_value": {
                    "description": "Matrix, material, substance, artefact, or object represented by the reference material",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_material_identifier_value": {
                    "description": "Identifier for a reference material or certified reference material",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_material_lot_value": {
                    "description": "Lot, batch, serial number, or production identifier of the reference material",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_material_name_value": {
                    "description": "Name of the reference material",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_material_producer_value": {
                    "description": "Producer, supplier, or certifying body responsible for the reference material",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_material_type_value": {
                    "$ref": "#/$defs/ReferenceMaterialTypeEnum",
                    "description": "Type or role of the reference material"
                },
                "reference_valid_from_value": {
                    "description": "Start date of validity for the reference entity or assigned value",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_valid_until_value": {
                    "description": "End date of validity for the reference entity or assigned value",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "ReferenceMaterial",
            "type": "object"
        },
        "ReferenceMaterialTypeEnum": {
            "description": "Types of reference materials",
            "enum": [
                "certified_reference_material",
                "reference_material",
                "calibrator",
                "quality_control_material",
                "matrix_reference_material",
                "in_house_reference_material",
                "other"
            ],
            "title": "ReferenceMaterialTypeEnum",
            "type": "string"
        },
        "TraceabilityBasis": {
            "additionalProperties": false,
            "description": "Reference basis to which a result is related, such as an SI realization, measurement standard, reference material, standard method, or boundary definition",
            "properties": {
                "common_reference_identifier_value": {
                    "description": "Identifier for the final reference, such as an SI unit realization, standard method, reference material, system boundary definition, or characterization model",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "common_reference_name_value": {
                    "description": "Name of the final common reference",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "common_reference_uri_value": {
                    "description": "URI or URL identifying the final common reference",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_authority_value": {
                    "description": "Authority, organization, metrology institute, standards body, or publisher responsible for the reference",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_scope_value": {
                    "description": "Scope or field of application for the reference",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_used_date_value": {
                    "description": "Date at which the reference was used to establish the traceability hierarchy",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_version_value": {
                    "description": "Version, edition, revision, or publication date of the reference",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_basis_description_value": {
                    "description": "Description of the common reference basis that gives meaning to the result",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_basis_identifier_value": {
                    "description": "Identifier for a traceability basis record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_basis_type_value": {
                    "$ref": "#/$defs/TraceabilityBasisTypeEnum",
                    "description": "Type of reference basis used to establish traceability"
                },
                "uncertainty_reference_value": {
                    "description": "Reference to an uncertainty statement, uncertainty budget, or uncertainty component associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "TraceabilityBasis",
            "type": "object"
        },
        "TraceabilityBasisTypeEnum": {
            "description": "Types of references that can serve as the basis for traceability",
            "enum": [
                "si_unit_realization",
                "measurement_standard",
                "certified_reference_material",
                "reference_material",
                "measurement_procedure",
                "standard_method",
                "system_boundary",
                "characterization_model",
                "data_source_or_dataset",
                "conventional_reference",
                "other"
            ],
            "title": "TraceabilityBasisTypeEnum",
            "type": "string"
        },
        "TraceabilityChain": {
            "additionalProperties": false,
            "description": "Documented chain or network relating a measurement result to a reference",
            "properties": {
                "chain_completeness_value": {
                    "$ref": "#/$defs/ChainCompletenessEnum",
                    "description": "Assessment of whether the chain is complete, partial, inferred, or unavailable"
                },
                "chain_end_reference_value": {
                    "description": "Final reference reached by the traceability chain",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "chain_notes_value": {
                    "description": "Additional notes about the traceability chain, including gaps or assumptions",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "chain_start_reference_value": {
                    "description": "Reference or value at the user-facing end of the traceability chain",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "chain_validation_status_value": {
                    "$ref": "#/$defs/TraceabilityStatusEnum",
                    "description": "Validation status of the traceability chain"
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_chain_identifier_value": {
                    "description": "Identifier for a traceability chain or traceability network",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_chain_name_value": {
                    "description": "Human-readable name of the traceability chain",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_chain_type_value": {
                    "$ref": "#/$defs/TraceabilityChainTypeEnum",
                    "description": "Type or topology of the traceability chain"
                },
                "traceability_links": {
                    "description": "Ordered or networked links that make up a traceability chain",
                    "items": {
                        "$ref": "#/$defs/TraceabilityLink"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "uncertainty_reference_value": {
                    "description": "Reference to an uncertainty statement, uncertainty budget, or uncertainty component associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "TraceabilityChain",
            "type": "object"
        },
        "TraceabilityChainTypeEnum": {
            "description": "Topology or kind of traceability chain",
            "enum": [
                "linear_calibration_chain",
                "branched_calibration_network",
                "method_traceability_chain",
                "boundary_traceability_chain",
                "hybrid_chain",
                "not_documented"
            ],
            "title": "TraceabilityChainTypeEnum",
            "type": "string"
        },
        "TraceabilityLink": {
            "additionalProperties": false,
            "description": "Single documented step in a traceability chain, including calibration, comparison, transfer, method adherence, or boundary reference",
            "properties": {
                "calibration_records": {
                    "description": "Calibration, comparison, verification, or check records that support traceability",
                    "items": {
                        "$ref": "#/$defs/CalibrationRecord"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "link_date_value": {
                    "description": "Date on which this traceability link, calibration, comparison, transformation, or modelling step was established",
                    "format": "date",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "link_from_reference_value": {
                    "description": "Reference entity, value, standard, method, or node from which this link starts",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "link_procedure_value": {
                    "description": "Procedure, calibration, comparison, transformation, conversion, or modelling step used in this link",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "link_role_value": {
                    "$ref": "#/$defs/TraceabilityLinkRoleEnum",
                    "description": "Role of the traceability link in the chain"
                },
                "link_sequence_value": {
                    "description": "Position of the link in the traceability chain, where lower numbers are closer to the reported result",
                    "type": [
                        "integer",
                        "null"
                    ]
                },
                "link_to_reference_value": {
                    "description": "Reference entity, value, standard, method, or node to which this link points",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "link_uncertainty_reference_value": {
                    "description": "Reference to the uncertainty contribution associated with this traceability link",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "statement_notes_value": {
                    "description": "Additional notes about the traceability statement",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_link_identifier_value": {
                    "description": "Identifier for a step, edge, or link in a traceability chain",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "TraceabilityLink",
            "type": "object"
        },
        "TraceabilityLinkRoleEnum": {
            "description": "Roles of links in a traceability chain",
            "enum": [
                "calibration",
                "comparison",
                "verification",
                "correction",
                "value_transfer",
                "method_definition",
                "boundary_definition",
                "data_source_mapping",
                "software_or_model_execution",
                "other"
            ],
            "title": "TraceabilityLinkRoleEnum",
            "type": "string"
        },
        "TraceabilityStatement": {
            "additionalProperties": false,
            "description": "Reusable statement documenting the traceability basis of a measured, calculated, method-defined, or boundary-defined value",
            "properties": {
                "applies_to_class_value": {
                    "description": "Class in an external model to which this traceability statement applies",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "applies_to_model_value": {
                    "description": "Name, URI, or namespace of the external data model to which this traceability statement applies",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "applies_to_record_value": {
                    "description": "Identifier of the external record, object, dataset, or passport entry to which this traceability statement applies",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "applies_to_slot_value": {
                    "description": "Slot or attribute in an external model to which this traceability statement applies",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "applies_to_value_identifier_value": {
                    "description": "Identifier of a specific value object when the target model gives value-level identifiers",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "applies_to_value_path_value": {
                    "description": "JSONPath, XPath, RDF path, or other pointer to the value to which this traceability statement applies",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "boundary_definition": {
                    "anyOf": [
                        {
                            "$ref": "#/$defs/BoundaryDefinition"
                        },
                        {
                            "type": "null"
                        }
                    ],
                    "description": "Boundary, goal-and-scope, scenario, or model definition used to define a modelled value"
                },
                "calibration_records": {
                    "description": "Calibration, comparison, verification, or check records that support traceability",
                    "items": {
                        "$ref": "#/$defs/CalibrationRecord"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "competence_records": {
                    "description": "Competence, accreditation, validation, or quality system records supporting traceability",
                    "items": {
                        "$ref": "#/$defs/CompetenceRecord"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "data_quality_reference_value": {
                    "description": "Reference to a data quality assessment associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "evidence_reference_value": {
                    "description": "Reference to supporting evidence such as a certificate, report, procedure, dataset, standard, or software record",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurand_description_value": {
                    "description": "Operational definition of the measurand, including what is measured, calculated, or assessed",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurand_identifier_value": {
                    "description": "Identifier for the measurand, quantity, indicator, or value of interest",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurand_name_value": {
                    "description": "Name of the measurand, quantity, indicator, or value of interest",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "measurement_procedure": {
                    "anyOf": [
                        {
                            "$ref": "#/$defs/MeasurementProcedure"
                        },
                        {
                            "type": "null"
                        }
                    ],
                    "description": "Procedure or method used to define, obtain, transfer, or compare the value"
                },
                "measurement_standards": {
                    "description": "Measurement standards, artefacts, instruments, and realizations used in traceability",
                    "items": {
                        "$ref": "#/$defs/MeasurementStandard"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "quantity_kind_value": {
                    "description": "Kind of quantity or indicator being traced, such as mass, length, concentration, carbon footprint, or circularity indicator",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "quantity_unit_value": {
                    "description": "Unit in which the value or measurand is expressed",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reference_entities": {
                    "description": "Reference entities, standards, methods, instruments, datasets, or organizations used in traceability",
                    "items": {
                        "$ref": "#/$defs/ReferenceEntity"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "reference_materials": {
                    "description": "Reference materials and certified reference materials used in traceability",
                    "items": {
                        "$ref": "#/$defs/ReferenceMaterial"
                    },
                    "type": [
                        "array",
                        "null"
                    ]
                },
                "reported_value_identifier_value": {
                    "description": "Identifier for the reported measured, calculated, or assessed value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reported_value_unit_value": {
                    "description": "Unit associated with the reported value",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "reported_value_value": {
                    "description": "Reported value to which the traceability statement applies",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "result_date_value": {
                    "description": "Date or time at which the reported result was generated, measured, calculated, or issued",
                    "format": "date-time",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "standards_applied_value": {
                    "description": "Standard, guide, protocol, or normative document applied when establishing traceability",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "statement_notes_value": {
                    "description": "Additional notes about the traceability statement",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_basis": {
                    "anyOf": [
                        {
                            "$ref": "#/$defs/TraceabilityBasis"
                        },
                        {
                            "type": "null"
                        }
                    ],
                    "description": "Reference basis that establishes the meaning and comparability of the value"
                },
                "traceability_chain": {
                    "anyOf": [
                        {
                            "$ref": "#/$defs/TraceabilityChain"
                        },
                        {
                            "type": "null"
                        }
                    ],
                    "description": "Traceability chain or network that relates the result to a reference"
                },
                "traceability_statement_date_value": {
                    "description": "Date and time when the traceability statement was issued or last updated",
                    "format": "date-time",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_statement_identifier_value": {
                    "description": "Identifier for a metrological traceability statement that can be referenced from another CE-RISE model",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_statement_label_value": {
                    "description": "Human-readable label for the traceability statement",
                    "type": [
                        "string",
                        "null"
                    ]
                },
                "traceability_statement_type_value": {
                    "$ref": "#/$defs/TraceabilityStatementTypeEnum",
                    "description": "Type of traceability being documented"
                },
                "traceability_status_value": {
                    "$ref": "#/$defs/TraceabilityStatusEnum",
                    "description": "Lifecycle or validity status of the traceability statement"
                },
                "uncertainty_reference_value": {
                    "description": "Reference to an uncertainty statement, uncertainty budget, or uncertainty component associated with this traceability record",
                    "type": [
                        "string",
                        "null"
                    ]
                }
            },
            "title": "TraceabilityStatement",
            "type": "object"
        },
        "TraceabilityStatementTypeEnum": {
            "description": "Kinds of traceability statements supported by this model",
            "enum": [
                "si_traceability",
                "method_defined_traceability",
                "boundary_defined_traceability",
                "reference_material_traceability",
                "conventional_reference_traceability",
                "hybrid_traceability",
                "not_evaluated",
                "other"
            ],
            "title": "TraceabilityStatementTypeEnum",
            "type": "string"
        },
        "TraceabilityStatusEnum": {
            "description": "Lifecycle and validation status values for traceability records",
            "enum": [
                "draft",
                "active",
                "reviewed",
                "verified",
                "partial",
                "expired",
                "superseded",
                "unavailable"
            ],
            "title": "TraceabilityStatusEnum",
            "type": "string"
        }
    },
    "$id": "https://ce-rise-models.codeberg.page/metrological-traceability/",
    "$schema": "https://json-schema.org/draft/2019-09/schema",
    "additionalProperties": true,
    "description": "Root container for metrological traceability statements and supporting records",
    "metamodel_version": "1.7.0",
    "properties": {
        "boundary_definitions": {
            "description": "Boundary, goal-and-scope, scenario, or model definitions used as traceability references",
            "items": {
                "$ref": "#/$defs/BoundaryDefinition"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "calibration_records": {
            "description": "Calibration, comparison, verification, or check records that support traceability",
            "items": {
                "$ref": "#/$defs/CalibrationRecord"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "comparability_assessments": {
            "description": "Assessments of whether traceability statements support meaningful comparison",
            "items": {
                "$ref": "#/$defs/ComparabilityAssessment"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "competence_records": {
            "description": "Competence, accreditation, validation, or quality system records supporting traceability",
            "items": {
                "$ref": "#/$defs/CompetenceRecord"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "evidence_references": {
            "description": "Evidence records referenced by the metrological traceability model",
            "items": {
                "$ref": "#/$defs/EvidenceReference"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "measurement_procedures": {
            "description": "Measurement, calculation, sampling, calibration, analytical, or modelling procedures used for traceability",
            "items": {
                "$ref": "#/$defs/MeasurementProcedure"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "measurement_standards": {
            "description": "Measurement standards, artefacts, instruments, and realizations used in traceability",
            "items": {
                "$ref": "#/$defs/MeasurementStandard"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "reference_entities": {
            "description": "Reference entities, standards, methods, instruments, datasets, or organizations used in traceability",
            "items": {
                "$ref": "#/$defs/ReferenceEntity"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "reference_materials": {
            "description": "Reference materials and certified reference materials used in traceability",
            "items": {
                "$ref": "#/$defs/ReferenceMaterial"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "traceability_bases": {
            "description": "Reference bases used to establish metrological traceability",
            "items": {
                "$ref": "#/$defs/TraceabilityBasis"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "traceability_chains": {
            "description": "Traceability chains or networks available for reuse by one or more traceability statements",
            "items": {
                "$ref": "#/$defs/TraceabilityChain"
            },
            "type": [
                "array",
                "null"
            ]
        },
        "traceability_statements": {
            "description": "Reusable traceability statements that can be embedded or referenced by other CE-RISE data models",
            "items": {
                "$ref": "#/$defs/TraceabilityStatement"
            },
            "type": [
                "array",
                "null"
            ]
        }
    },
    "title": "metrological-traceability",
    "type": "object",
    "version": "0.0.1"
}