ACH code R53 indicates that the transaction was rejected because the account number referenced is not a valid savings account. Banks and financial institutions typically use this code to communicate the reason for dismissing an ACH debit or credit transaction.
If you receive this code, the savings account number provided needs to be corrected, closed, or unauthorized for ACH transactions. You should verify the account number and contact your bank to resolve the issue.
It is important to note that ACH transactions may be rejected for a variety of reasons, and it is essential to understand the specific reason for the rejection to take appropriate action.