Dear Darshan,
Please try the below code when you call BADI for method if_ex_me_process_po_cust~check :
DATA : lt_oitem TYPE PURCHASE_ORDER_ITEMS,
lx_oitem TYPE PURCHASE_ORDER_ITEM,
lx_mitem TYPE mepoitem.
CALL METHOD IM_HEADER->GET_ITEMS
RECEIVING RE_ITEMS = lt_oitem.
LOOP AT lt_oitem INTO lx_oitem.
ld_oitem = lx_oitem-item.
CALL METHOD LD_OITEM->GET_DATA
RECEIVING RE_DATA = lx_Mitem.
ENDLOOP.
The Address field is in lx_mitem-adrnr.
Regards,
Yance