ACH Error R63 - What is this?

ACH (Automated Clearing House) code R63 indicates that a transaction was rejected due to an invalid individual ID number. This code is typically used when an individual’s bank account has been debited or credited incorrectly due to an error in the identification number.
The personal ID number is a unique identifier assigned to each person with a bank account. Depending on the country and the bank, it may be a social security number, a tax identification number, or another type of identification number.
If you have received this ACH code, the transaction you initiated was unsuccessful, and the funds still need to be transferred. You should verify the unique ID number you entered and ensure it is correct. If you’re still having issues, you should contact your bank for assistance in resolving the issue.