As per my understanding there are limitations on the special characters that can

As per my understanding there are limitations on the special characters that can be part of the Appian Username, First Name, Last Name other attributes of the user profile. I see list valid special characters for username field are present in the link
forum.appian.com/.../User_Management.html
Can anybody help me to know the valid characters related to the other user attributes (mainly mandatory fields like First Name, Last Name, email etc.)?

Also can we remove these restrictions by chaninging configurations on the server?...

OriginalPostID-116635

OriginalPostID-116635