R27 - Trace Number Error
The trace number is missing, or the Original Entry Trace Number in an addenda record does not match the trace number of the entry it is attached to.
R27 - Trace Number Error
The trace number is missing, or the Original Entry Trace Number in an addenda record does not match the trace number of the entry it is attached to. This rejection is recoverable: correct the cause and the same payment can be resubmitted.
What this code means
The trace number is missing, or the Original Entry Trace Number in an addenda record does not match the trace number of the entry it is attached to.
Typical causes
- Trace number not sequentially assigned within the batch
- Original Entry Trace Number in the addenda does not match the entry detail record
- Trace number prefix does not match the ODFI routing number
What to do
Correct the trace number and re-send. Not a reinitiation.
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.
799R27091000010000001 09100001 091000019000001Tools for this code
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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