field-symbols:
<fs_vbrp> type vbrp,
<fs_line> like line of lt_itab.
loop at lt_vbrp assigning <fs_vbrp>.
unassign <fs_line>.
read table lt_itab assigning <fs_line> with key matnr = <fs_vbrp>-matnr.
* OR if you'd like to read by VBELN:
* read table lt_itab assigning <fs_line> with key vbeln = <fs_vbrp>-vbeln.
check <fs_line> is assigned.
endloop.
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