Reject incoming transaction(s)

A common scenario is that a debit transaction is received and the account holder doesn't have enough money in their account to honor the debit amount. In this case, you will need to return the transaction to the originating bank and let them know the account holder has insufficient funds.

This endpoint is for rejecting transactions that meet certain criteria based on NACHA rules. It will create and send a notification to the originating bank to let them know the transaction could not be completed.

See the reference for a detailed list of parameters and responses.