but a higher-up approved it.
Sounds like you already know this, but if the decedent's creditors go looking for funds in the estate and there isn't adequate funds to satisfy all the outstanding debts, they will be knocking on your bank's door with a lawsuit for improper conversion of this check.
I've never had a CTR like this one before.
Nor should you ever have one like it again (see comments above)
Do we include the dead customer as "person on whose behalf?"
Although I majored in theology and was on a track to go to seminary prior to going into banking, I won't have a theological discussion on what is done on behalf of dead people. This side of the afterlife, nothing is done on behalf of dead people because they are dead. Was the check cashed on behalf of the estate? If so list the estate. If the partner cashed the check on their own behalf and took the money and ran, then the CTR would be on the partner conducting on own behalf and your institution will be sweating out the issues raised in the first question above until the statute of limitations for a creditor to make a claim against your bank passes.
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