Uncollected Funds
Category: Funds Initiated by: RDFI
Read reinitiation conditions and source →Applies to (SEC scope)
ALL
camt.053 mapping
AM07 — Blocked Amount
Nacha's definition
A sufficient book or ledger balance exists to satisfy the dollar value of the transaction (i.e., uncollected checks), but the available balance is below the dollar value of the debit entry.
Verbatim from Nacha — ISO 20022 Guide to Mapping U.S. ACH Return Items and Notifications of Change, August 2023, Version 2.01 (Table 1, return reason codes) (return reason code table). Applies to: ALL.
Reinitiation conditions
Reinitiation is the route Nacha permits for resubmitting a returned entry, and its public rule page confirms it is restricted under Subsection 2.12.4 of the Rules: a reinitiated entry must carry identical Company Name, Company ID and Amount, must show RETRY PYMT in the Company Entry Description, and an entry reinitiated outside the Rules can be returned as R10 with a Written Statement of Unauthorized Debit. The permitted number of reinitiations and the window are set in the Rules themselves and are not stated on Nacha's public pages — confirm the current limits with your ODFI before any retry.
How it appears in an ISO 20022 statement
Nacha's mapping guide maps R09 to camt.053 reason code AM07 (Blocked Amount) — ISO definition: Amount of funds available to cover specified message amount is insufficient.
Return time frame
Nacha's public rule pages refer to the standard "two-day" return time frame for returns that are not extended (unauthorized) returns. The current Nacha Operating Rules and your ODFI determine the applicable deadline for this code; a general public two-day reference is not a substitute for that code-specific requirement.
What an operator does next
Funds are on the ledger but not yet available — typically uncollected check deposits. Treat like R01 for retry decisions, with the same reinitiation restrictions. Timing any permitted retry to when the funds are expected to clear is the practical lever.
PaymentBrief guidance, not Nacha text. Your ODFI's procedures and the current Nacha Operating Rules govern.
R01 or R09: distinguish available funds from ledger balance
Hypothetical USD 100 debit: R01 means the available or cash-reserve balance cannot cover it. With R09, the ledger has enough, but less than USD 100 is available—for example, because a deposited check is uncollected. These are illustrations of the definitions above, not observed customer cases.
Read the original return record before choosing the next action. Neither code is permission to retry immediately: confirm the applicable reinitiation limits and timing with your ODFI and preserve the required retry fields.
Compare R01 — Insufficient fundsWhere this comes up on PaymentBrief
Direct debit explained: ACH, SEPA, Bacs and eGIRO
Where ACH debit returns sit in the mandate and collection lifecycle, and how the return-rate thresholds bear on your ODFI relationship.
Recurring payments and billing operations
What a return means for the next billing cycle, dunning and mandate status.
Sources for this code
- Nacha — ISO 20022 Guide to Mapping U.S. ACH Return Items and Notifications of Change, August 2023, Version 2.01 (Table 1, return reason codes) — retrieved 2026-09-06
- Nacha — rule page 'ACH Network Risk and Enforcement Topics' (unauthorized return rate threshold; reinitiation of entries) — retrieved 2026-09-06
- Nacha — Micro-Entry Return Scenarios chart and guidance (14 July 2022) — retrieved 2026-09-06