I'm doing a validation in user-exit EXIT_SAPMP56T_002 (include ZXTRVU03), and I want to display a error message. So, I'm using the instructions:
continue_with_update = 'N'.
MESSAGE ID xxx TYPE 'E' NUMBER yyy.
What happens is that in SAP GUI it works fine, but in SAP Portal it gives a lot of java exceptions.
Is there other way to display the error message that it works fine in the portal?