What is it called when the amount credited to an AO account exceeds the amount billed by the bank?

When the amount credited to an account exceeds the amount billed by the bank, it is typically referred to as an "overpayment." This situation may arise from various factors, such as billing errors, duplicate payments, or adjustments made by the bank. An overpayment can result in a credit balance in the account, which may be refunded or applied to future charges.