| Previous | Next |
| STATUS_USER_DELETE_TRUST_QUOTA_EXCEEDED | STATUS_DS_DUPLICATE_ID_FOUND |
STATUS_DS_NAME_NOT_UNIQUE
The requested directory name is not unique
This status points to uniqueness enforcement in the directory namespace or indexed identity attributes. It is not necessarily the same as an object already existing at the exact same DN; the conflict may involve a unique identifier used for lookup or naming.
Diagnose it by searching the relevant naming context and GC, especially when provisioning code constructs names from display names, aliases, UPNs or legacy account names.
What to inspect
- Search for existing objects using the exact identifier and normalized forms.
- Check both the writable domain partition and the Global Catalog when the name must be forest-wide.
- Review synchronization joins that may be reusing an old object instead of updating it.
References
- Microsoft: Global Catalog
- LDAP protocol operations: RFC 4511
- LDAP DN string form: RFC 4514
- Microsoft Open Specifications: NTSTATUS values
Looking for a different code? Search another status or error code.