Answer Posted / narasimha reddy

Bdc Approach is Screen and function code interface.
When enter the screen we required enter multiple Data
same screen.
example va01. at enter qty and material fields. if system allowed only Limited entries. after press enter system allocated some entries. finally save button.
This logic recorded in SHDB Transaction.
loop at it_vbap into wa_vbap.
concatenate 'VBAP-AMTNR(' V1 ')' Into field.
perform sub_fld v1 wa_vbap-matnr.
" we assum system allowed 5 entries after enter data again 5 fields allowed.
v1 = v1 + 1.
if v1 = 6.
v1 = 1.
perform sub USING 'BDC_OKCODE. '00/'.
PERFORM SUB1 USING 'SAPMV45A' '4100' 'X'.
perform sub USING 'BDC_OKCODE. '00/'.
endloop.

ABOVE CODE FOR SAMPLE .

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