PaperCut does not impose a 20 character long username limit, however when using Windows Active Directory we utilise the “sAMAccountName”. This is what is seen as the owner of the print job in the print queues. Please see the attached screenshot:
This Active Directory field has a 20 character limit as you can see here in this article: http://msdn.microsoft.com/en-us/library/ms679635.aspx
Internally, PaperCut’s limit on username is 50 characters.
Keywords: username truncation, user name, short name, shortened name, UPN, login name,