Trade Errors, Cancels, Rebills, and As-Of Pricing
Quick Answer
Trade errors fall into firm-caused and customer-caused categories, which determines who absorbs any market-move loss. Corrections are executed through paired cancel-and-rebill entries with mandatory qualified-principal approval under FINRA Rule 4515. Firm-caused mutual fund errors are repriced at the originally-intended NAV date (as-of pricing); customer-caused errors reprice at the next NAV. The party at fault pays.
Most back-office problems begin with a trade that was booked incorrectly. A purchase into the wrong account, a buy that was supposed to be a sell, a wrong share class, a wrong amount. The error-correction framework decides who bears the market-move loss between the mistake and the fix, and whether a principal has to sign off.
What are the main categories of transaction errors?
The first question in any error review is "what kind of error is this?" because the answer drives the correction method and who absorbs the loss.
- Erroneous report: a confirmation, account statement, or positions report that does not match the actual executed trade (wrong price, wrong quantity, wrong security, wrong account)
- Firm-caused error: the mistake originated with the broker-dealer (BD) side (the rep entered the wrong CUSIP, operations keyed the wrong account, a system misrouted the order)
- Customer-caused error: the mistake originated with the customer (the customer stated the wrong fund name, wrong share class, or wrong dollar amount)
- Clearly erroneous trade: an obvious mistake in price, quantity, or security identity that justifies cancellation and rebilling to the correct terms
Exam Tip: Gotchas
- The error-correction rules hinge entirely on the firm-caused vs. customer-caused distinction. A stem that describes who made the mistake is telling you which party has to absorb the market-move loss. Read the fact pattern for the origin of the error first.
How is a trade error corrected through cancel and rebill?
Once the error is identified, the correction is executed as a paired cancel-and-rebill.
- Cancel: the original (incorrect) trade is voided on the firm's books
- Rebill: a replacement trade is booked to the correct account, security, or share amount
- Principal approval: a qualified principal must review and approve any cancel-and-rebill before the rebilled trade settles into the destination account
- Error account: most firms maintain a dedicated firm error account where interim positions can be parked while corrections are processed; the error-account P&L aggregates the cost of firm-caused errors across the firm
Why supervisory approval is required. Error corrections are a classic focus of FINRA examinations because a cancel-and-rebill can be used to move a profitable trade out of a proprietary or relative account and into a customer account, or vice versa. The review requirement exists specifically to deter that abuse.
The cross-reference to Unit 3 Topic 5 (account changes and internal transfers) matters here. Changes in account name or designation, including a rebill that moves a trade between accounts, require written documentation and qualified-principal approval before entry. This is not a suggestion. A rep who unilaterally "moves" a trade between accounts, even a related-party account, without documented principal sign-off has committed a supervisory violation.
Exam Tip: Gotchas
- A cancel and rebill always requires qualified-principal approval before it lands in the destination account. A rep who processes the rebill on their own is committing a Rule 4515 violation even if the original error was innocent.
How is as-of pricing applied to correct a mutual fund error?
The question "what Net Asset Value (NAV) is the corrected trade executed at?" has two answers, and the answer depends on who caused the error.
| Error Origin | NAV Used for Correction | Who Absorbs Intervening Market Move |
|---|---|---|
| Firm-caused | Originally-intended NAV date (as-of price) | The firm |
| Customer-caused | Next NAV calculated after corrected instructions | The customer |
Firm-caused errors are corrected at the NAV the customer should have received had the error not occurred. The customer is made whole. The firm absorbs the profit or loss between the originally-intended date and the correction date.
Customer-caused errors are corrected at the next NAV calculated after the firm receives the corrected instructions. The customer bears whatever market move happened between the original (incorrect) instructions and the correction. Forward pricing applies to the correction just as it applies to any fresh mutual-fund order.
Think of it this way: the principle is "the party who made the mistake pays for the mistake." A firm that fat-fingered the customer's order should not leave the customer worse off because of the fat finger. A customer who misstated the fund name is not entitled to a retroactive discount when the market has moved against them.
Documentation. The error-correction form identifies the error source (firm vs. customer), the supervisor who approved the correction, and the rationale for the NAV date used. A firm that quietly backdates customer-caused errors to stale NAV dates is engaging in the same late-trading abuse that FINRA and the Securities and Exchange Commission (SEC) have pursued under enforcement priorities for more than two decades.
Exam Tip: Gotchas
- Firm-caused errors use the originally-intended NAV date; customer-caused errors use the next NAV. Reversing this is a common distractor. Memorize: the party at fault pays for the market move.
- As-of pricing abuses implicate late-trading enforcement, not just books-and-records rules. Booking late orders at stale NAVs for favored customers is exactly the misconduct that drove the 2003 mutual-fund scandals. An exam question that describes a rep persuading operations to "just use yesterday's NAV" is testing late-trading, not routine error correction.
How are variable-contract errors corrected?
Variable annuities and variable life insurance contracts are corrected through the insurance carrier, not the broker-dealer, because the contract is owned by the carrier.
- The firm-caused vs. customer-caused principle is the same as mutual funds
- Corrections run through the carrier's error-correction procedures, which are documented in the product's prospectus and administrative materials
- Principal review of variable-annuity (VA) purchases within 7 business days after the customer signs the application catches many contract-level errors before money transmits to the carrier. This is the cross-reference to Unit 1 and Unit 9 on VA supervision under FINRA Rule 2330.
Think of it this way: the VA principal-review window is designed to catch errors at the earliest possible point, when the rep has the application in hand but the money has not yet left the customer's account. Catching an error here avoids the much-harder process of unwinding the contract after it has funded.
Which trade errors do Series 6 reps most often encounter?
The Series 6 rep's error exposure is narrow but concentrated on mutual funds and variable contracts.
- Most errors in the Series 6 universe involve wrong fund, wrong share class (A vs. C, for example), wrong amount, or wrong account for a mutual-fund purchase
- Wrong-share-class errors are especially sensitive because they overlap with breakpoint and Class B vs. Class A compliance, which FINRA prioritizes in examinations
- Variable-contract errors are caught or missed at the principal-review checkpoint set by Rule 2330
Corrections → 4513 complaint file if the customer writes in about the error → 4530 report if the error results in a settlement above the reporting thresholds → Form U4 amendment if the rep is named.