Problems with UserExit_move_fields_to_vbap.

Hi all,

Requirement: Displaying tax code, vat registration number on Additional tab of VA01, VA02 and VA03.

step1: I have added zz_mwsk1 on VBAP and zz_stceg, zz_mwsk1 on VBAK.

Step2: I have coded as

FORM USEREXIT_MOVE_FIELD_TO_VBAK.

vbak-zz_stceg = tkomk-stceg.

vbak-zz_mwsk1 = xkomv-mwsk1.

ENDFORM.

FORM USEREXIT_MOVE_FIELD_TO_VBAP.

vbap-zz_mwsk1 = xkomv-mwsk1.

ENDFORM.

Now VBAK fields are working fine, MWSK1 of VBAP is not working for first item in va01 transaction(see in figure: Picture). But MWSK1 of VBAK is working.

When i tried debugging i found that XKMOV-MWSK1 is not assigning to VBAP-zz_MWSK1(Userexit_move_fields_to_vbap) is not called for first item. But it is working for second item.

Please suggest me what is the problem.

Thanks in advance,

Thanks & Regards,

NarsiReddy.