I'm using jXplorer, I didn't found any manageDsaIt settings, so I assume that it doesn't support, perhaps I can't bypass the enforcement - but may be I'm wrong. The unique key constraint still doesn't work.
Start with the command line ldapmodify binary instead. jxplorer does in fact set the manageDSAIT flag on some operations.
--Quanah -- Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: <http://www.symas.com>