Thismethod made possible the following rule, to which there is absolutely no exception: For each transaction, the debit amount (or the sum of all the debit amounts, ifthere are more than one)must equal the credit amount (or the sum of all the eredit amounts). This is way bookkeeping is called double-entry bookkeeping. It follows that the recording of a transaction in which debits do not equal crediths is incorrect. For allthe accounts combined, the sum of the debit balances must equal the sum of sum of the credit balances; otherwise something has been done incorrectly. Thus, the debit and cradit arrangement used in accounting provides a usaful means of checking the accuracy with which the transactions have been recorded.