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NWIP Digital product passport – Unique identifiers

Scope

The European Standard for Unique Identifiers in Digital Product Passports aims to define requirements for unique identifiers used to identify products, facilities and economic operators. The standard covers aspects such as ensuring uniqueness, syntax-related requirements, and semantic-related requirements for identifiers. It allows for both centralized and decentralized identifier systems.

Additionally, the standard ensures that the unique product identifier accommodates three granularity levels: model, batch, or item, as required by the European Single Product Passport Regulation (ESPR). It limits the length of the identifier string to a maximum of 70 characters while guaranteeing uniqueness and compliance with existing legal requirements, including Commission Implementing Regulation (EU) 2015/2447.

To promote interoperability, reduce costs for businesses, and align with existing European regulations and initiatives, the standard takes into account the various types of identifiers already used in other legislations. Relevant existing standards are considered during the development of the new harmonized standard to maintain consistency and coherence with industry practices and regulations.

Purpose

According to EC updated draft SReq DPP (v2) - Annexes - with track changes - submitted to CCMC on 2023-09-26:

The standard(s) shall define requirements related to the following areas:

a) Uniqueness of each identifier (i.e., the same identifier shall not be assigned to different products, different economic operators, or different facilities),

b) Syntax-related requirements,

c) Semantic -related requirement

The standards shall consider the diversity of identifiers currently used by economic operators and accommodate them as much as possible.

The standard(s) should allow both the possibility to use ‘centralised’ and ‘decentralised’ identifiers.

The unique product identifier should always allow the possibility to include the three different granularity levels introduced in ESPR, i.e. model, batch or item.

This is needed because DPP of products sold online will only be available at model level, while the ESPR delegated acts may require the product specific DPP to be available at batch level with the possibility for economic operators to serialise their DPPs having a DPP at item level.

The need to move from batch to item will also be needed for those product groups for which updated of passports will be relevant, for example those products for which repair activities can be expected. Moreover, in some cases like in Battery Regulation (EU) 2023/1542, the granularity level for the DPP passport is at item level. The maximum length of the product unique identifier string should be maximum 70 characters. Any solution proposed should guarantee the uniqueness of the identifier string and compliance with existing legal requirements with particular reference to Commission Implementing Regulation (EU) 2015/2447

In order to promote interoperability, reduce costs for companies, and support coherency and consistency of digitalisation efforts, the standard(s) developed should adequately take into account typology of identifiers already used in other European legislations and initiatives. Existing relevant standards should be duly considered when drafting the new harmonised standard(s).

A non-exhaustive list is provided below:

• ISO/IEC 15459

• ISO/IEC 61406

• ISO/IEC 29161

• ISO/IEC 15418

• ISO/IEC 9834-8

• ISO 17442

• ISO/TR 23249

• ISO/TR 6039

• ISO 22383

• ISO 22385

• ISO 22387

• ISO 22376

• ISO 22372

• ISO/IEC 19762

• EN IEC 63365

• ISO/IEC 20248

• ISO/IEC 19845:2015

• EN 16931-1, -3-2, -3-3

 • ISO 22378

• ISO 22381

Note: in case the WI is based on documents from other organizations than ISO/IEC, please specify it here

• CEFACT Cross Industry Invoice ITU-T X.1403

• ITU-T X.1403

• W3C on DIDs

• W3C on verifiable credentials

Comment on proposal

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Please email further comments to: debbie.stead@bsigroup.com

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