File: Supply chain traceabilityEvidence checked 27 October 2026General information only
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The Custody File: identity, events, evidence
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247 guides across 20 clusters. Each one opens with an evidence file: the question it answers, the evidence level and the first check. Page 2 of 7, guides 42 to 82.

File 08 - Interoperability and standardsData vocabularies and code listsShared vocabularies stop the same thing being called by different names in different systems. This guide covers vocabularies and code lists for traceability..GuideFile 09 - Recall traceback and forward tracingDefining the scope of a recall traceScope decides which lots, batches, and destinations are included. This guide covers how scope is set from the first evidence, and how it is widened or narrowed..GuideFile 01 - Identity and foundationsDefining the unit of trace for one product familyA unit of trace is defined before data is collected, not after. This guide sets out how to define it for one product family, one facility, and one reason to tra.GuideFile 11 - Digital product passportsDigital product passports and the trace behind themA digital product passport is a product level digital record, accessed through a data carrier, holding selected product data. Its value depends on the traceabil.File guideFile 04 - Chain of custodyDigital signatures and custody evidenceA digital signature can bind a custodian to an event record. This guide explains what a signature proves, and what it does not prove, about physical custody..GuideFile 03 - Event records and custody eventsDispatch and handover eventsA handover moves custody from one party to another. This guide covers dispatch records, receiving confirmation, and the gap between the two..GuideFile 14 - Responsible sourcingDue diligence frameworks for sourcingThe OECD Due Diligence Guidance is a widely used framework for responsible supply chains. This guide explains its steps in general terms..GuideFile 20 - Electronics, minerals and batteriesElectronics manufacturing genealogyElectronics genealogy connects a finished device to its boards, components, and lots. This guide covers that record..GuideFile 20 - Electronics, minerals and batteriesElectronics recall tracebackAn electronics recall may target a component lot across many finished products. This guide covers that traceback..GuideFile 20 - Electronics, minerals and batteriesElectronics supplier mappingElectronics chains involve many tiers and specialised suppliers. This guide covers mapping electronics tiers..GuideFile 20 - Electronics, minerals and batteriesElectronics traceability and circularityCircularity needs a record of materials, components, and condition. This guide connects traceability to reuse and recycling..GuideFile 20 - Electronics, minerals and batteriesElectronics traceability for repairRepair replaces components and creates a new device history. This guide covers repair records..GuideFile 20 - Electronics, minerals and batteriesElectronics traceability: components and assembliesElectronics traceability follows components through assembly, testing, and distribution. Component level identity matters when a single part fails or is counter.File guideFile 08 - Interoperability and standardsEPCIS events as a shared languageEPCIS is a standard language for supply chain events. This guide explains its event types and how they map to a traceability record..GuideFile 17 - Supplier evidence managementEscalating evidence problemsPersistent evidence problems escalate from reminders to commercial consequences. This guide covers escalation in stages..GuideFile 12 - The EU forced labour regulationEU forced labour and importersImporters are central to the regulation because the ban applies at placing on the market. This guide covers importer preparation..GuideFile 12 - The EU forced labour regulationEU forced labour and product bansA ban decision follows an investigation and a finding. This guide explains the decision in general terms and what follows from it..GuideFile 12 - The EU forced labour regulationEU forced labour and remediationRemediation is distinct from traceability, but the two are connected. This guide explains remediation in general terms and its place in a due diligence response.GuideFile 12 - The EU forced labour regulationEU forced labour and small businessesSmaller businesses face the same prohibition with fewer resources. This guide covers proportionate preparation for small and medium enterprises..GuideFile 12 - The EU forced labour regulationEU forced labour and supplier mappingMapping suppliers and facilities is a first step in preparation. This guide connects supplier mapping to the regulation..GuideFile 12 - The EU forced labour regulationEU forced labour evidence and due diligencePreparation for the regulation rests on due diligence and evidence, not on a single certificate. This guide covers the evidence a company may need to gather..GuideFile 12 - The EU forced labour regulationEU forced labour guidance and databasesOfficial guidance and risk databases support preparation. This guide explains which official sources to consult and how to use them..GuideFile 12 - The EU forced labour regulationEU forced labour investigations: how a case proceedsAn investigation under the regulation follows stages set out in the regulation and its guidance. This guide explains those stages in general terms, without pred.GuideFile 12 - The EU forced labour regulationEU forced labour regulation versus United States enforcementThe EU and United States systems differ in mechanism, burden, and remedy. This guide compares them without blending their rules..GuideFile 12 - The EU forced labour regulationEU forced labour risk indicatorsRisk indicators help prioritise due diligence. This guide explains product, sector, and geographic risk factors in general terms..GuideFile 12 - The EU forced labour regulationEU forced labour timeline and applicationThe regulation applies in stages set out in its own text. This guide explains how to read its application provisions and why dates must be checked against the o.GuideFile 12 - The EU forced labour regulationEU forced labour traceability preparation checklistA preparation checklist turns the regulation into record work. This guide sets out that checklist as a set of record questions..GuideFile 10 - Traceability software and systemsEvaluating traceability software on the record it producesSoftware should be judged on the trace it produces, not on its interface. This guide sets out evaluation criteria tied to identity, events, relationships, and e.File guideFile 03 - Event records and custody eventsEvent context that makes a scan usefulA scan without context records an identifier at a moment. This guide sets out the context that turns a scan into an event: place, custodian, quantity, and relat.GuideFile 05 - Supplier data agreementsEvent data a supplier must provideA supplier agreement should name the events a supplier records, not just the documents it sends. This guide lists those events..GuideFile 03 - Event records and custody eventsEvent data: the minimum fieldsA minimum field set keeps event records comparable across partners. This guide proposes that set and explains why each field earns its place..GuideFile 03 - Event records and custody eventsEvent record retentionEvent records are kept for a reason, and that reason sets the retention period. This guide covers retention, retrieval, and disposal of event data..GuideFile 03 - Event records and custody eventsEvent records for returnsReturned goods re-enter a chain with a history. This guide covers return events, re-inspection, and how returned units are kept distinct from new stock..GuideFile 03 - Event records and custody eventsEvent records: what changed, where, and whenAn event record says that something happened to a defined unit, at a place, at a time, under a custodian. Without those four elements, a list of scans is not a.File guideFile 03 - Event records and custody eventsEvent timing and time zonesEvents recorded in different time zones, or with system clocks that drift, can appear out of order. This guide covers timing discipline for event records..GuideFile 05 - Supplier data agreementsEvidence a supplier must provideCertificates, test results, and shipment documents are evidence, not traceability by themselves. This guide covers what evidence to require and how it is checke.GuideFile 17 - Supplier evidence managementEvidence consistency checksInconsistent evidence is a signal, not a filing error. This guide covers cross-checking documents against each other and against the trace..GuideFile 17 - Supplier evidence managementEvidence expiry and renewalCertificates and test results expire. This guide covers expiry tracking and renewal before a gap opens..GuideFile 07 - Data governance and evidenceEvidence files for a single productAn evidence file gathers the records for one product or batch in one place. This guide sets out the structure of such a file..GuideFile 17 - Supplier evidence managementEvidence for a single shipmentShipment evidence differs from standing supplier evidence. This guide covers the shipment file and its link to standing evidence..GuideFile 17 - Supplier evidence managementEvidence for audit and inspectionAn audit tests evidence by sampling. This guide covers preparing an evidence file for audit..Guide