Hello Cristina,
I spent enough time in search of a solution, but could not arrive at. But few useful inputs to share:
- User-exit QQMA0014 does not trigger for this Notification Saving, so this can not work.
- It seems that the solution can be through implicit enhancement point in PBO module of screen 400 of program SAPLIPAR. (For making the field DIIPHA-I_IPARNR mandatory)
- Another option is to look into implicit enhancement points in program SAPLQFFE.
May be your ABAPer will be able to achieve this.
Good luck
KJogeswaraRao