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STATUS_DS_ATTRIBUTE_OR_VALUE_EXISTS
The requested attribute value already exists
This is a conflict in the directory data model. For single-valued attributes, the attribute already has a value; for multi-valued attributes, the specific value being added is already present.
The status is useful when debugging idempotent provisioning. A create-or-add routine should not treat it like a connectivity error, and it should not blindly delete and recreate attributes whose values are managed by another authority.
What to inspect
- Identify whether the target attribute is single-valued or multi-valued.
- Read the current attribute values from the same DC that processed the failed update.
- Check synchronization or provisioning races that may have added the value first.
References
- LDAP protocol operations: RFC 4511
- LDAP schema model: RFC 4512
- Microsoft: Active Directory schema
- Microsoft Open Specifications: NTSTATUS values
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