Hi,
I am trying to discover and learn more about concept of setting "input mask" on particular field on standard SAP screen(s).
For example, I plan to setup custom mask for field UNSEZ (Our reference) for program SAPMM06E (ME31K Tcode - header data). Please see screenshot bellow:
https://s15.postimg.io/ih6zqgukr/example.jpg
Cerrently, by SAP default, in that field is possible to add almost ANY value without any input mask which *doesn't* makes any obligation for end-user to enter data in specific format. In my case, custom format for input mask would be "XXX-13-XYYY" where X represents obligatory number which is required, and Y represents number which is not required.
In order to find concept how to achieve this result, I done some google research but after a while, I have am confused should I try to update some ABAP code (via SE80/SE38 or similar for program SAPMM06E), should I use some Field exit (link https://scn.sap.com/thread/814770) or something else?
Any help is appreciated and many thanks in advance!
Sam