Multi-tier traceability

A textile brand implements multi-tier traceability across its active catalogue ahead of the textile DPP in 2027.

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  Tier 1 onboarding (garment-making): a contractual obligation to declare Tier 2 and allow cascaded auditing.

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  GS1 Digital Link data carrier on each batch: a resolvable URL pointing to the batch DPP.

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  EPCIS 2.0 events at each change of hands: timestamp + GLN + business step.

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  W3C VC for certifications (GOTS, RCS, OEKO-TEX): cryptographic signature of the issuing body.

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  A central visibility platform (TraceWeave) that orchestrates the 4 tiers with a tier-by-tier dashboard.

Common mistakes

• Traceability is not a supplier list; without volume, events and verifiable reliability it is corporate transparency, not product transparency.

  EPRS §2.2 p.3, in faithful paraphrase: in 30% of cases the first-tier supplier list was published, without linking that information to products. A Level 1/Tier 1 list published on the corporate website is corporate transparency (data aggregated at company level) and does not resolve the per-SKU traceability required by the textile DPP. Real multi-tier traceability requires per-batch or per-unique-product granularity (EPRS §4.6), volumes per event, nominal identification of the actor at each level, and documented or verified reliability — not merely "declared".

• Multi-level traceability is not bought as SaaS: the SaaS only captures what the contractual negotiation already allowed to be captured.

  A traceability platform (including TraceWeave) provides the technical infrastructure for capture, documentary verification, GS1 identifiers, EPCIS events and W3C Verifiable Credentials. But the Level 2-4 data is provided by the supplier only if the cascaded contractual clause from Level 1, the economic incentive or the regulatory obligation exists. EPRS §6 explicitly identifies coordination between stakeholders and the harmonisation of data as the main challenges alongside the technical infrastructure. The technology is necessary but on its own does not generate traceability.

• Traceability is not equivalent to blockchain: blockchain is a component of immutability, not the complete system.

  EPRS §2.2 lists blockchain among the technological options (mobile app, blockchain, connected screen, QR code, etc.) observed in the Fashion Pact brands. Crypto-backed immutability only adds value when the captured data is honest at source — anchoring a false declaration on a blockchain makes it verifiable but wrong. The four canonical variables of EPRS §4.6 (granularity, level of detail, reliability, completeness) operate at the capture and verification level, not at the storage level. Serious platforms combine event capture (EPCIS), signed credentials (W3C VC) and, optionally, cryptographic anchoring — the blockchain is one piece, not the system.

• Declarative traceability is not enough: the European regulatory convergence requires at least "documented" or "verified by a trusted third party".

  EPRS §4.6 p.19, in faithful paraphrase, distinguishes four increasing degrees of reliability: absence of information, declared information, documented or, better still, verified by a trusted third party. The converging regulations raise the bar: the EUDR requires geolocation with verifiable data; the Forced Labour Regulation shifts the burden of proof to the brand with an administrative investigation; the ESPR/textile DPP foresees categories of mandatory information and information subject to verification; the CSDDD anchors due diligence in the chain. Pure declarative traceability ("the supplier says it is organic cotton from India") is no longer enough to support commercial claims under the ECGT (Dir. 2024/825 recital 9 lists "biobased" among claims prohibited without recognised environmental excellence) or to support reports under CSRD/ESRS.

• The two level conventions are not interchangeable: always make explicit which one is used.

  EPRS PE 757.808 §2.3 models the chain with Level 0 retail → Level 4 raw materials (inverse numbering). The Sustainable Apparel Coalition uses Tier 1 garment-making → Tier 4 cultivation. In the EPRS convention, spinning is Level 3; in the SAC convention, spinning is Tier 3 (when separated from Tier 2 fabric) or Tier 2 (when consolidated). Other simplified conventions speak of Tier 1 garment-making + Tier 2 "processes" + Tier 3 raw material, compressing two EPRS levels into one. A brand communicating "85% traceability at Tier 2" must specify which level that referenced Tier 2 is, or the data is ambiguous. The canonical textile glossary must use an explicit and consistent convention across all reporting.

Frequently asked questions