R41 - Invalid Transaction Code (ENR only)

The transaction code in an ENR (Automated Enrollment) entry is invalid for enrolment purposes.

R41 - Invalid Transaction Code (ENR only)

The transaction code in an ENR (Automated Enrollment) entry is invalid for enrolment purposes. This rejection is recoverable: correct the cause and the same payment can be resubmitted.

Data & formatACH · NACHA (US) Recoverable

Can you resubmit? This rejection is recoverable: correct the cause and the same payment can be resubmitted.

What this code means

The transaction code in an ENR (Automated Enrollment) entry is invalid for enrolment purposes.

Typical causes

Transaction code outside the values permitted for ENR
Enrolment built with a payment transaction code
Data-entry error in the ENR addenda

What to do

ENR-only code, restricted to federal-government agency traffic. Correct the transaction code 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.

799R41091000010000001      09100001                                            091000019000001

Tools for this code

Decode a real status report, or check a payment file before you send it — all in your browser, nothing uploaded.

ACH / NACHA validator ABA routing number All rejection codes

ACH return codes: the complete reference

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

All rejection codes

R41 - Invalid Transaction Code (ENR only)