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ERROR_DS_NAME_TYPE_UNKNOWN
A naming component uses an unknown attribute type
Each attribute type in an LDAP distinguished name must be recognizable by the directory schema or accepted numeric object identifier form. The RDN text before the equals sign is not an arbitrary label. If the server cannot map that name to an attribute type, it cannot interpret the distinguished name correctly.
Inspect every attribute type in the parsed RDN sequence and compare it with the schema lDAPDisplayName or OID expected by the target directory. This is especially important for code that imports DNs from another LDAP implementation with vendor-specific attribute names. Changing the RDN value does not fix an unknown attribute type.
What to inspect
- Parse the DN and list the attribute type used by every AVA.
- Check the Active Directory schema for the exact lDAPDisplayName or OID.
- Avoid translating external directory DNs by simple string substitution.
References
- IETF RFC 4514: string representation of LDAP distinguished names
- IETF RFC 4512: LDAP directory model, aliases, DNs, and schema
- MS-ADTS: constraints on Active Directory Add operations
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