Create 03-30-release-2026.3.18.md (#111)

Author: johannesbattjes

changelog/2026/03-30-release-2026.3.18.md

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+---
+slug: "2026.3.18"
+title: "2026.3.18: Various fixes"
+---
+
+| Component | Summary (english)                                                                                                                                                                                                  | Relevance for consumers (English)                                                                                                                                                                                 | Relevance for end users (Dutch)                                                                                                                                     | Relevance for system administration (Dutch) |
+| --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------- |
+| DRC       | On all DRC operations the audittrail 'New' and 'Old' value are the same except for lock and unlock. This has been fixed.                                                                                           | The audittrail for DRC operations now correctly shows the old and new values, which improves traceability of changes.                                                                                             | De audittrail voor DRC operaties toont nu correct de oude en nieuwe waardes, wat de traceerbaarheid van wijzigingen verbetert.                                      |                                             |
+| DRC       | A recent fix to enforce unique document identification (`identificatie`) inadvertently prevented any updates to documents that shared the same identification number as another document. This has been corrected. | Client applications can now correctly `PATCH` or `PUT` documents that before the previous fix shared an `identificatie` with other documents, as long as the `versie` is different, which was previously blocked. | Het was onterecht niet mogelijk om een document te wijzigen als een ander document met hetzelfde nummer bestond (maar met een ander versienummer). Dit is hersteld. |                                             |