NOA acknowledgments: why verification starts there

A notice of assignment tells a customer to pay the factor. An acknowledgment shows the customer got the message. Without one, every other verification step rests on an assumption.

On Business Audits · October 28, 2026 · 5 min read

On a notification facility, the factor’s protection depends on one thing: the client’s customers paying the factor, not the client. The notice of assignment, or NOA, is how that happens. It tells each customer that the receivables have been assigned and where to send payment from now on.

Under the Uniform Commercial Code, once a customer has received an authenticated notice of the assignment, it can discharge its obligation only by paying the assignee. A customer that pays the client after receiving a proper notice may have to pay again. That is powerful protection, but only if the notice reached the right person and the customer’s payables team acted on it. The acknowledgment is how you know.

What an acknowledgment proves

A signed acknowledgment from the customer’s accounts payable department shows three things:

  1. The notice was received, by someone in a position to act on it.
  2. The payment instructions were updated: the factor’s lockbox or account is now the remit-to address.
  3. The customer knows who to call about the account, which matters when you need to verify a balance or resolve a dispute.

A notice that was mailed but never acknowledged proves only that it was sent. Large customers in particular change vendor payment details through a controlled process, and a letter that never reached that process changes nothing.

Why verification starts here

Every other verification step assumes the customer knows the factor’s role.

  • Balance confirmations. A customer that has never acknowledged the NOA may not understand why a third party is asking what it owes, and may not answer, or may answer the client instead.
  • Payment tracing. If payments are arriving at the client’s bank, the first question is whether the customer was ever told to pay elsewhere. An unacknowledged NOA turns a misdirected payment from a red flag into a likely administrative failure, and the fix is different.
  • Disputes and offsets. A customer that has acknowledged the assignment is far more likely to raise disputes with the factor, where they can be managed, rather than simply short-paying.

So the first question in any customer verification is whether the NOA was acknowledged, by whom and when.

Building the picture

For each customer on the funded receivables, an examiner should be able to answer:

  • Was a notice sent? When, by what method, and to which address or contact.
  • Was it acknowledged? By whom, on what date, and does the signature come from accounts payable rather than the buyer or a salesperson?
  • Are payments arriving where they should? Receipts at the factor’s lockbox from this customer since the acknowledgment date.

Ranked by balance, the result shows how much of the funded receivables rests on customers who have confirmed the arrangement.

Customer status Customers Balance ($) Share
NOA acknowledged, paying the factor 14 412,600 76.4%
NOA acknowledged, recent payment to client 2 38,900 7.2%
NOA sent, not acknowledged 5 71,300 13.2%
No NOA on file 3 17,200 3.2%
Total 24 540,000 100.0%

Coastal Freight Services LLC, an illustrative client.

The first line is the comfortable one. The second needs a call to each customer: they acknowledged the notice and still paid the client. The third and fourth are the gap, $88,500 of funded receivables where the customer may not know it should be paying the factor.

Following up the gaps

For customers without an acknowledgment:

  1. Confirm the right contact. Accounts payable, not purchasing. Many customers have a vendor maintenance email or portal for exactly this.
  2. Resend the notice, asking for a signed acknowledgment and confirmation that the remit-to details have been updated.
  3. Call. A short call to accounts payable often does more than a second letter, and the examiner can confirm the balance at the same time.
  4. Hold or limit advances on customers who will not acknowledge, according to your credit policy.

Some customers will not sign anything as a matter of policy. In those cases, confirmation that their system now shows the factor’s remit-to details, ideally evidenced by payments arriving at the lockbox, is the practical substitute.

At each exam

NOA status is not a one-time check. Customers change their payables staff and systems, clients add new customers, and an acknowledgment from three years ago may not reflect today’s remit-to records. A good field exam reviews NOA status for every new customer since the last exam, re-checks the largest balances, and treats any payment received by the client from an acknowledged customer as a finding that needs an explanation.

Verification done in that order, starting with the NOA, gives every other test something solid to stand on.