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Public Denmark Author: Nikolina Basić
The NHR API updates on 12 August 2026, changing JSON response structure. Developers must review parsing, utilize demo environment for testing. Changes include field renamings and additions.
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Content accuracy validation date: 08.07.2026
Content accuracy validation time: 08:04h

The NHR API (for e-invocing in Denmark) will be updated on 12 August 2026. While the way systems call the API remains the same — endpoints, HTTP methods, and request parameters are unchanged — the structure of JSON responses will be different.

Developers and businesses integrating with the API should review how they parse responses to ensure compatibility. Testing is encouraged in the demo environment before the new version goes live: api-demo.nemhandel.dk.

The changes are:

  • Profile object: Field names changed from camelCase to PascalCase. Flags renamed (IsNhAs4Enabled, IsPeppolEnabled).
  • Role object: Field names also changed to PascalCase.
  • Participant fields: New Boolean fields ActiveInDkSml and ActiveInEuSml show registration status.
  • CertificateBindings: Recipient services now include certificate binding details with activation and expiration dates.
  • Additional profile fields: DocumentStandardId and NetworkTypeId added.
  • Timestamp field: Last modification is now documented as lastModifiedString.

Demo/Test environment is available now, and production release is planned for 12 August 2026.

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