a question of customize error message screen in VL02N
i have an exit(USEREXIT_SAVE_DOCUMENT_PREPARE) to loop through the xlips table and do a checking upon user click the PGR button in VL02N.
When i want to throw a error message with message e001(zxxx). it does not throw to the standard error log screen we have in the vl01n/vl02n. (the one which prompt up when we don't key in location,pick qty, batch...etc)
it simply throw the error message at the bottom bar of the screen. And once i click any button in screen, it will throw another error message "Risk of posting several mat.documents for one delivery->long text" and exit from the transaction.
Please advise how to get the standard error log screen.