Since Monday, December 5, 2022, FINRA is experiencing an issue with ORF clearing messages for transactions that are cancelled, corrected, broken or reversed and thus causing duplicate settlement messages and incorrect settlement amounts for those transactions.
In the interim, until FINRA resolves the issue, FINRA requests ORF clients work with their clearing firms to send the necessary transactions directly to NSCC that will adjust the settlement imbalances.
This section is RED and BOLDED:
Firms should continue to monitor any ORF cancels, corrections and reversals submitted, for potential imbalances at NSCC and work with their clearing firms until FINRA announces the issue has been resolved.
FYI: this is in RED, BOLDED, AND UNDERLINED on the source page: imbalances at NSCC and work with their clearing firms
FINRA is working on a permanent solution and will update clients as more details are known.