DPP Unique Identifiers Explained

What ESPR means by a unique identifier

ESPR Article 2(30) defines a unique product identifier as a unique string of characters for the identification of a product that also enables a web link to the digital product passport. It has two jobs at once: identify the product and resolve to its passport. That second job is why an internal SKU alone is not automatically a DPP identifier.

Three identifiers, not one

The regulation defines three separate identifier types, and passport data elements in Annex III reference all of them.

• Unique product identifier: identifies the product and links to its passport (Article 2(30)).
• Unique operator identifier: identifies an actor involved in the product's value chain (Article 2(31)).
• Unique facility identifier: identifies locations or buildings involved in, or used by actors in, the value chain (Article 2(33)).

What is already fixed

Article 10 sets the essential requirements. The passport must be connected through a data carrier, such as a barcode or two-dimensional symbol, to a persistent unique product identifier. The carrier must be physically present on the product, its packaging, or accompanying documentation, as the delegated act specifies.

• ESPR required data carriers and identifiers to comply with the ISO/IEC 15459 series or equivalent standards until harmonised references were published; Decision (EU) 2026/1736 now references six harmonised DPP standards.
• Annex III names the Global Trade Identification Number under ISO/IEC 15459-6 as a passport data element.
• Passport data must be based on open standards, interoperable, machine-readable, and transferable without vendor lock-in.

What the delegated act still decides

Article 9(2) leaves the operational detail to each product category's delegated act: whether the passport works at model, batch, or item level and how those levels are defined, which data carriers are used, the layout and positioning of the carrier, who can access and update which data, and how long the passport stays available, which must at least match the expected product lifetime.

Who issues identifiers

Article 12 covers the case where an operator or facility identifier does not exist yet: the economic operator creating or updating the passport must request one on behalf of the relevant actor, after confirming that none exists. Future delegated acts will set the rules for issuing agencies and for operators that create their own identifiers, with the stated goals that identifiers stay reliable, verifiable, globally unique, and technologically neutral.

The registry connection

The Commission made the Registry operational on 20 July 2026 under ESPR Article 13 and Implementing Regulation (EU) 2026/1778. For products that applicable EU law requires to have a DPP, the responsible operator registers the identifiers and metadata and receives a unique registration identifier. That identifier—and proof of registration—evidences registration, not full product compliance.

• Article 10(3) adds a distribution duty: dealers and online marketplaces must receive a digital copy of the data carrier or unique product identifier free of charge within five working days of a request.
• A back-up copy of the passport must be made available through a digital product passport service provider.

Practical operator moves

The early work is an identifier inventory, not a technology purchase. Document how products are identified today across SKU, GTIN, batch, and serial systems, then note where one physical product resolves to several internal identities. When evaluating software, ask how identifiers stay persistent across vendor changes, because the no-lock-in requirement in Article 10 is a framework rule you can hold vendors to.