Full_Name: Michael Str.der Version: HEAD OS: URL: Submission from: (NULL) (212.227.35.94)
It would be handy if slapo-unique could set matchedDN along with result code constraintViolation(19) to a DN of an existing entry causing the constraint to fail.
To avoid information disclosure ACL checking could be performed to determine whether the bound identity has at least search privilege on the entry pseudo attr and unique attr.