Final answer:
The bank charges another company's deposit to our account, which should be recorded in the bank reconciliation as a deduction. It is an error that needs to be corrected by the bank.
Step-by-step explanation:
When a bank erroneously credits an account with a deposit that belongs to another company, this transaction should be recorded in the bank reconciliation as a deduction. This is because the deposit increases the account balance without a corresponding business transaction. Once the error is noticed, the bank is obligated to correct the mistake, thereby reducing the account balance by the amount of the erroneous deposit.