We received a part into inventory.  It  appears in inventory (IN-A) and the transaction is in the general ledger (debit to inventory-parts and credit to the RNI g/l account), but it is not in the detail of RNI (PO-I-F).  When I tried to receive the invoice from the vendor for this part (AP-C) it says that there are no receivers found.  This has happened for two different parts this month, different part #, different p o, different vendor and different date received but same exact problem.  The transaction is everywhere except RNI.  I can't enter the invoices for payment and the g/l account is out of balance with the RNI report by those two parts.  Please help!  How do I correct this??