188.8.131.52.1.2 Naming Constraints
During an originating update of the Add, Modify, and Modify DN operations, the server validates the following naming constraints. Unless otherwise specified, the server returns the error namingViolation / <unrestricted> if a naming constraint is not met.
The RDN must not contain a character with value 0xA.
The RDN must not contain a character with value 0x0; otherwise, the server SHOULD return the error invalidDNSyntax / <unrestricted>. However, if the DC functional level is DS_BEHAVIOR_WIN2000, the server will not return an error.
The DN must be compliant with [RFC2253].
The RDN size must be less than 255 characters.
Naming constraints are not enforced for replicated updates.