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ERROR_DS_INVALID_ATTRIBUTE_SYNTAX
ERROR_DS_INVALID_ATTRIBUTE_SYNTAX (0x0000200B) is an Active Directory Domain Services LDAP result. The attribute value does not match the syntax defined for that attribute in the Active Directory schema.
Read the schema syntax for the exact attribute and log the value as sent on the wire. Fix formatting, encoding, range, or DN representation at the producer so repeated LDAP modifies do not resend the same invalid value.
What to check
- Check the attribute syntax and whether the client sent the correct value type, encoding, and format.
- For a distinguished name value, validate every RDN component and escaping rule.
- Do not replace a value with a guessed format; inspect the schema definition and a known-good object first.
Useful command
Get-ADObject -Identity "<distinguishedName>" -Properties *Microsoft: Get-ADObject · Microsoft: AD DS LDAP operations · Microsoft: AD DS diagnostic logging
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