Service decision and evidence guide

EUDAMED secondary identifiers: optional DI and issuing-entity mapping

The acquired dictionary permits at most one secondary DI associated with a UDI-DI and records a separate secondary issuing entity. Keep optional secondary identifiers separate from the primary DI and confirm the actual supported addition workflow.

Evidence retrieved 2026-10-07. Source versions and topic-specific limits are listed below.

Sourced criteria · EU · EUDAMED

What changes the service scope?

Decision or taskWhat the source describesWhat to prepare
DD UDI-DI / FLD-UDID-136 / Secondary (Master) UDI - DI codeDescription: Secondary UDI DI Code - reference to the Secondary UDI-DI registered for the current UDI-DI . Additional DI associated to this UDI-DI. Only one Secondary UDI-DI (Additional UDI-DI) can be associated to a UDI-DI | Occurrence: 0..1 | Updateability: Y (Add) Can be provided later on if initially not provided | Referenced rules: BR-UDID-03 BR-UDID-20 | XML mapping: secondaryIdentifier (DIIdentififierType->DIcode) [1]Apply this source context to the specific tasks below; retain missing facts and review current target-environment compatibility.
DD UDI-DI / FLD-UDID-293 / Issuing Entity Secondary (Master) UDI-DIDescription: Assigned Issuing Entities that will generate the DI Codes allocated for all DI`s inside Eudamed (Basic UDI DI, UDI-DI, Unit of Use DI, Secondary Di , Package level DI). The Commission shall designate one or several entities to operate a system for assignment of UDIs ('issuing entity') | Occurrence: 0..1 | Updateability: Y (Add) Can be provided later on if initially not provided | Referenced rules: not stated | XML mapping: issuingEntityCode [2]Apply this source context to the specific tasks below; retain missing facts and review current target-environment compatibility.
DD UDI-DI / FLD-UDID-291 / Issuing Entity (Master) UDI-DIDescription: Assigned Issuing Entities that will generate the DI Codes allocated for all DI`s inside Eudamed (Basic UDI DI, UDI-DI, Unit of Use DI, Secondary Di , Package level DI). The Commission shall designate one or several entities to operate a system for assignment of UDIs ('issuing entity') | Occurrence: 1 | Updateability: not stated | Referenced rules: not stated | XML mapping: issuingEntityCode [3]Apply this source context to the specific tasks below; retain missing facts and review current target-environment compatibility.
Acquired dictionary version history2.27.0 [4]Apply this source context to the specific tasks below; retain missing facts and review current target-environment compatibility.

Dated technical/help evidence, not a complete legal duty set or live EUDAMED response. Current target-environment release, business rules, permissions and actual buyer records remain unresolved. Blank dictionary flags are unknown; occurrence and update notes keep their stated conditions. No credentials, registration deadline or completed production exchange is inferred.

Prepare the EUDAMED secondary identifiers work package

Use this checklist to gather your business or product details before speaking with a specialist. The items below explain what to record and suggest useful supporting documents. You can add your own answers in the editable project brief.

  1. Inventory primary and additional identities

    Identify the primary DI and any actual secondary DI without creating a secondary value merely to fill a blank.

    Useful evidence: A source-backed primary/secondary identifier list.

  2. Reconcile issuing entities

    Map the issuer for each identifier and flag ambiguous or multiple-secondary entries.

    Useful evidence: A DI/issuer reconciliation and exception list.

  3. Plan the supported addition or correction

    Ask the provider to check the exact recorded update notes and current business rules before modifying existing records.

    Useful evidence: A scoped addition/correction plan with validation results.

Work packages and dependencies

Questions for providers

Sources and data dates

Read the official document in context. The audit details identify the precise locators and preserved versions used for this page.

European Commission / Swissmedic — published reference ↗

Thu, 27 Aug 2026 11:33:35 GMT · retrieved 2026-10-07

Audit details: precise locators and snapshot identifiers

Source key D07 · snapshot 6be29f5d393e95dbf5876b1a7c96f871d164111fb85f8eb086472218945c69c5

  • [1] DD UDI-DI!row 6 / observed dictionary field · record e5a65aa2af7b3dc2569fa617636d12502fe182d2ddffa79a4b5207339cb5c4a7
  • [2] DD UDI-DI!row 7 / observed dictionary field · record 7fbb91cecb59af9f24028cfc5d6943c28fd7c6fc5cafebd6c9c756b28bcf1866
  • [3] DD UDI-DI!row 5 / observed dictionary field · record d0647c518f19d17c0d5ff68c9b3f49544909c794973058ed33d643f2b0c3d014
  • [4] Version history!row 7 / version history · record 0104e358d46f4b84ab408953e8e901801bfe675566b0880393e7bb678a8a5487

Prepare an editable project brief

Confirm the facts, scope and contact preference before sharing your project. Preparing this page sends no provider outreach.

Choose work packages to discuss

Compare Find EUDAMED Registration| Compare & Get Quotes

EUDAMED Onboarding & Data Registration Support (Mandatory Modules)