R28 ACH return code: Routing Number Check Digit Error

What R28 means

The last digit of the routing number, the check digit, does not match the first eight digits.

Checked against 3 sources. Last reviewed .

R28 key facts

Official title Routing Number Check Digit Error
Returned by ACH Operator
Time frame Next file delivery
This is not a bank return deadline. The ACH Operator rejects the entry while processing the file and sends it back with its next file delivery.
Applies to Consumer and business accounts
Can you send it again? Yes. The entry was rejected before it reached the receiving bank, so correct the error and send a new entry.
Type of return Standard return

Why R28 happens

  • A typing mistake in the routing number.
  • Two digits swapped.

What to do next

If you sent the payment

  1. Check the routing number. The ninth digit is calculated from the first eight.
  2. Get the correct number from the customer and send a new payment.

If you got the notice about your own account

  1. Look up your bank's routing number and send it to the business again.

Got a return file from your bank? Open it in the ACH file viewer to see the code next to each payment.

Sources

  1. 2024 ACH Quick Reference Guide, EPCOR
  2. ACH Return, NOC and Transaction Codes, Commerce Bank
  3. ACH Return Reason Codes and Time Frames, CBS Bank

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General information, not legal or financial advice. Rules change and banks set their own requirements. Check with your bank before you act. ACH Forms is not affiliated with Nacha.