A customized error message for a form field.
A message that is output if invalid data is entered into the form field. The message appears in any form field of the "user message" class (FT is set to V and DT is set to M) that is available in the current form or display.
A 256-character string
If no message is specified, the null string ("") is used.
If no message is specified, default validation error message is displayed. The default message can be customized using the Language Customizer (ZIMLANG) administrative utility.
DT, HelpMsg