SAP Message /SAPMP/PP_SFC031 - Test element as column heading & contains impermissible special chars.

Diagnosis The text that you wish to use in your column heading containsimpermissible special characters. The following characters are permissible: A to Z, a to z, 0 to 9 andthe special characters -_/?$§*!#. No other characters arepermissible. &HINT& Blank spaces are not permitted in the heading.