Transaction Type setup with Autoinvoice

I plan on using the AR.RA_INTERFACE_DISTRIBUTIONS_ALL table to pass my REC and REV line items, do I need to have an entry in the Transaction Type set up for Receivable Account and Revenue Account or should I leave them blank?   When testing with blank values, AutoInvoice Import fails saying 

Errors:   1) Please correct the receivable account assignment (---)
            2) Please correct the revenue account assignment (---)

I am using a code combination id.  I have verified that it is valid and that it is not used in any rule. 

For testing, When I enter an account combination in the transaction type set up for Receivables and Revenue and run AutoInvoice Import, my records import successfully, but not with the account combination I pass through, it useds the account combination in the transaction type set up.