R51

Item Related to RCK Entry is Ineligible or RCK Entry is Improper

The item underlying an RCK entry was ineligible, notice was not provided, the signature is not genuine, the item was altered, or the amount was not accurately obtained from the item.

Initiator
RDFI (customer claim)
Category
Authorization
Retry
No

What to do next

Do not re-originate. Review RCK eligibility and notice practices — this code bundles several distinct failures, including forgery claims.

RCK

Awaiting expert review

Compiled from public secondary sources and not verified against the NACHA Operating Rules.