In order to better explain my issue, i'll give you an example.. (testing on ISPConfig 3 v 18.104.22.168 & debian squeeze) If I globally set prefixes like that: FTP USer: ftp[CLIENTID]_ DB Name: dbn[CLIENTID]_ DB User: dbu[CLIENTID]_ The Client (and also the admin) can successfully create/edit items like.. - ftp3_mycustom - dbn_mydbname - dbu_whatiwant ..without any conflicts. The reseller, instead, cannot add/edit items correctly because the interface imposes the reseller [CLIENTID] which take precedence over the client one. For example.. if a reseller try to edit an already inserted client ftp user like 'ftp3_mycustom', the interface add another prefix and the result is something like 'ftp2_ftp3_mycustom'. The problem is also visible if the reseller create first the user (so 'ftp2_mycustom') and the client try to edit it. All is ok if the add/edit actions are made by the admin. In this case the prefixes are correctly preserved. Am I wrongly using the "prefix feature" or it's a little bug ?