Product identifier (product ID / GTIN): The anchor of the entire passport. Every DPP hangs on a unique identifier – at model, batch or item level depending on the product group. In practice this is usually a GTIN, encoded as a web address in the QR code via the GS1 Digital Link standard: one scan leads straight to the passport. The technical requirements for identifiers and data carriers are standardised in the EN 18219 series.
Material composition: Which materials make up the product, and in what proportions? For a battery that means active materials and critical raw materials such as lithium, cobalt and nickel; for a garment the fibre composition; for steel the alloying elements. This is the field that fails most often in practice – because the data sits with upstream suppliers.
Substances of concern: If the product contains substances on the REACH candidate list or other regulated substances, they must be declared with concentration and location in the product. For recyclers this is one of the most important fields of all.
Recycled content: The share of recovered material – for batteries soon with binding minimum quotas for cobalt, lithium, nickel and lead. A field that cannot be estimated; it has to be evidenced.
CO₂ footprint: For the battery passport a life-cycle carbon footprint calculated to a prescribed methodology; for steel typically CO₂ per tonne. Important: it is not any figure that counts, but the one calculated according to the mandated method.
Repairability: Depending on the product group, a repairability score, spare-part availability data or – for batteries – state-of-health and expected-lifetime data. For electronics this field is becoming a competitive differentiator.
Disassembly instructions: Information for dismantling, reuse and recycling – from removing the battery to separating materials cleanly. The audience here is less the consumer than workshops and recyclers, who access the passport through tiered access rights.
Conformity documents: Declaration of conformity, certificates, test reports. The passport does not replace these documents – it links them in machine-readable form, making them findable for market surveillance and customs.
How many of these fields become mandatory for your products is defined by the delegated act for your product group – the legal basis is the ESPR (EU) 2024/1781. What the passport is in principle is explained on What is the Digital Product Passport?