R43 - Invalid DFI Account Number (ENR only)
The account number supplied in an ENR (Automated Enrollment) entry is invalid.
R43 - Invalid DFI Account Number (ENR only)
The account number supplied in an ENR (Automated Enrollment) entry is invalid. This rejection is recoverable: correct the cause and the same payment can be resubmitted.
What this code means
The account number supplied in an ENR (Automated Enrollment) entry is invalid.
Typical causes
- Account number malformed in the enrolment record
- Account does not exist at the named institution
- Account number field padded incorrectly
What to do
ENR-only code. Correct the account number and re-submit the enrolment.
What it looks like in an ACH return
The return arrives as an Addenda Record (type 99), 94 characters wide. The return reason code sits in positions 4-6.
799R43091000010000001 09100001 091000019000001Tools for this code
Decode a real status report, or check a payment file before you send it — all in your browser, nothing uploaded.
Related codes
Source: Nacha ISO 20022 mapping guide + Federal Reserve ACH Return Reason Report + US Treasury Green Book · Last verified: 2026-07-13
Checked against: nacha.org · frbservices.org · fiscal.treasury.gov