We have a customer who states they deposited cash into one of our ATMs and did not get credit for the full deposit amount, however they are unable to tell us how much they deposited. In the reg., it states that the content of the notice to the bank should, to the extent possible, include the date, type, and amount. If we are unable to finish the investigation before 10 business days, how are we supposed to know how much money to provide for provisional credit? We can continue to investigate by having our ATM vendor physically count the money in the ATM to determine if there is too much, but I don't understand how we are to comply with the provisional credit requirement.