ELM Password restriction
Accepted answer
This would be my answer: https://jazz.net/forum/questions/280550/jtsrtc-list-of-supported-characters-in-passwords
Dependent on how the server is set up an LDAP or similar system would manage the passwords this system might limit the characters to be used. I recently ran into a system that restricted the symbol characters. An error message should tell you in case.
I desperately try to avoid characters in passwords that are language dependent or move around on keywords if you switch the language.