Payables Open Interface Import-- 'PROCESSED" record from ap_invoices_interface & line table but r

Hi every one,

While submitting the  Payables Open Interface Import Program some of the record are rejected  with error  "UNDEFINED OPERATING UNIT"  ,  but while checking the ap_invoices_interface & line table I can see record is PROCESSED and hit the base table  .

Now problem is that some of the record still present in ap_interface_rejection  table
I have  Custom program which insert data in INTERFACE table and submit the "Payables Open Interface Import" from back end and update the  STG table if any error come  while seeded program validation . having logic if record status in PROCESSED in interface table and not present in rejection table the mark status as P in STG table  if not then mark as error .