Can I customize/edit error messages?

I would like to know if I can alter the text displayed in an error page such as the one displayed in the attached picture. I of course do not have a problem with the fact that an error is displayed, as it makes sense based on which user was attempting the action to view a request. However, the grammar and punctuation used in this error message (and in many places in the software) does not quite meet the level of professionalism we and our customers expect to see.

I appreciate the many ways I can customize the notifications and templates with ServiceDesk Plus and am hoping that I can also edit the text of messages such as these. I am running SDP 7.6 with built-in MySQL on Windows Server 2003 R2. Where are those customizations made?

Thank you in advance,
Brandi