Hi Donna, please see link below:
sales order - Additional data B
Basically, what you need to know:
- First you need ask to an ABAPer to add an append structure in table VBAP, via SE11, containing these fields you want. The fields must begin with 'Z' as you pointed out.
- Then in transaction SE51 maintain user exit screens in program SAPMV45A, using screen # 8459, you will add the fields you placed before in VBAP table. You can use this transaction to also edit the Add. Data B layout (note this is also an ABAP function)
- Then you can use these user-exits to add some field validations, field mask, etc.:
MV45AOZZ
MV45AIZZ
MV45ATZZ
MV45AFZZ