The crossword solution for the term 'CHECK THE SUM' is 'READD'. This is an acronym for 'Reconcile, Examine, Analyze, Document, and Disburse', which are the five steps of the Accounts Payable process. This process is used to ensure that all payments made by a company are accurate and properly documented. The first step, Reconcile, involves comparing the amount of money in the company's bank account to the amount of money that is expected to be there. The second step, Examine, involves examining the invoices and other documents related to the payment. The third step, Analyze, involves analyzing the data to make sure that the payment is accurate. The fourth step, Document, involves documenting the payment and any other relevant information. The fifth and final step, Disburse, involves disbursing the payment to the appropriate party.