Clearly you have no excuse for not identifying the account owner who deposited over $10,000 in cash. In some banks, the second deposit would not be recognized as something that needed to be reported, and no aggregation would take place. In other banks, the fact would be recognized on the day after the transaction, when overnight aggregation reports are reviewed. At that point, unless the teller can remember who made the second deposit, and you have information on that individual, you'd have to try contacting your customer to see if he/she can provide identifying information. If you can't get complete information (or get none at all), you'd have to check the "multiple deposits excuse box" in Section B of the legacy CTR.
In yet other banks, the second transaction would get "flagged" at the teller line because of the earlier cash transaction, and the teller would be notified to collect CTR identification information from the conductor.
There's no regulatory requirement that you use technology to assist with aggregation. But if you have the capability and don't use it, your regulator can and will cite you for a violation.
_________________________
John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8