ACH code R83 - What is this?

The ACH code R83 is used by the receiving depository financial institution (RDFI) to indicate that the ACH transaction has been rejected because the routing number and account number combination provided in the transaction is incorrect.
This code is typically used when the RDFI is unable to process the transaction due to an error in the routing number or account number provided, such as an incorrect or invalid routing number, an invalid account number, or a combination of the two that does not match any existing account at the RDFI.
When an ACH transaction is rejected with an R83 code, the originator should contact the receiver to obtain the correct routing number and account number information and initiate a new transaction with the corrected information.
It is essential to ensure that the routing number and account number information provided in an ACH transaction is accurate to avoid the risk of transaction rejection and delay in the processing of the transaction.