How to change source document of SAP provided print program (Adobe Forms)

Hello everybody,

I have the task to modify a SAP provided form for Russia called M-11 which is based on material document and used for internal withdrawal. The requirement is to print out the delivery number instead of material document.

How to begin? Is it enough to change the reference table MSEG to VBDKL/LIKP in print program?

My ABAP-skills are at the very beginning stage, so please talk slowly 😊

Thank you in advance!

Greetings