A direct debit transaction does not process like a regular credit card transaction because it has to go through the bank for authorization.
When using IATS for the processing: Once the transactions are processed, check your report on the IATS website. You can manually enter the codes on the gifts if appropriate.
When using Blackbaud Merchant Services (BB753764) for the processing: Rejection codes will be returned to the batch if the transactions have not been processed through Blackbaud Merchant Services. BBMS does not create Authorization codes for Direct Debit transactions processed in batch, only Reject codes.