I'd like to change the message AR129 from eroor to warning.
I've launched OBA5 but SAP doesn't allow me to fill a new entry for this message.
So, I've changed the type of message AR129 by SE16N in tab T100, T100C and T100S
In this case, the message has remained type error!
However, I'd like to know if ther's a standard procedure to modify these tables.