The most common error that affects reconciliation is the erroneous entry of the Accounting Date. You can reduce the possibility of the wrong date being entered by using the Automatically close period option in General Ledger. This setting marks a checkbox next to the next period to prevent posting. Depending on GL Settings, if a transaction is entered to a closed period, you will receive a warning that a transaction is posting to a closed period in Enter Direct Costs, Billings and Payments in Job Cost, Enter Invoices in Accounts Payable or Enter Time in Payroll. These warnings will also print on Entry Journals. In General Ledger, however, transactions cannot be entered or posted to closed periods.