Output Parameters	Significance
no	-

Return Code	Significance
0	no error
1	message module not initialized
2	no message active

As opposed to the function dal_mes_wri, this function does not insert a new message row into the message window, but overwrites the last message row with the active message.

Prior to calling this function you must have output a message in the message window.

The function dal_mes_upd has been enabled for the Java and Web client.