diff --git a/content/change-logs/device-management/cumulocity-10-18-540-239-LWM2M-csv-optional-fields.md b/content/change-logs/device-management/cumulocity-10-18-540-239-LWM2M-csv-optional-fields.md
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+---
+date: 
+title: Improved LWM2M CSV bulk device registration
+product_area: Device management & connectivity
+change_type:
+  - value: change-VSkj2iV9m
+    label: Fix
+component:
+  - value: component-1KLUzmqfe
+    label: LWM2M
+build_artifact:
+  - value: tc-QHwMfWtBk7
+    label: cumulocity
+ticket: DM-4150
+version: 10.18.540.239
+---
+In previous versions of the LWM2M service, optional registration fields were treated as required if they appeared in the imported CSV file. This issue has now been resolved, and empty values in these fields are correctly ignored.