Additional Fields in VBAP ( Line Item Sales Order )

Question

H i
To Add New Fields in Additional Data B Screen of VA01 Screen , Line Items VBAP Table
1.Create an append structure for VBAP containing the new fields*......(   Plz tell me how to Append and create new field with ZZ)*
2. modify user exit screen SAPMV45A 8459 to map the new fields...( When i go to VBAK screen -Systemstatus--Screen Program ---*Screen No 4002 instead of 8459  ....... WHAT I NEED TO MODIFY)*
2. modify user Include MV45AFZZ to add ABAP logic*....... LOGIC PLZ
Regards
Rohit

Answer 1

Hi,
  1.Create an append structure for VBAP containing the new fields*......( Plz tell me how to Append and create new field with ZZ)*
>>>> Go to table VBAP, click on the button append structure enter a zzname create structure add fields to the strucutre.
2. modify user exit screen SAPMV45A 8459 to map the new fields...( When i go to VBAK screen -Systemstatus--Screen
Program ---*Screen No 4002 instead of 8459 ....... WHAT I NEED TO MODIFY)*
8459 is the subscreen that you cna edit to add your custom fields
2. modify user Include MV45AFZZ to add ABAP logic*....... LOGIC PLZ
MVMV45AFZZ you can add logic to populate the fields
Regards,
Himanshu