At your client site, the Payables period-close processes have been performed. The Payables transfer to GL has been completed, and the resulting journal entries have been posted to GL. The current…

At your client site, the Payables period-close processes have been performed. The Payables transfer to GL has been completed, and the resulting journal entries have been posted to GL. The current Payables period has been closed. The Accounts Payable Trial Balance (last day of prior period) + Posted Invoices - Posted Payments equals the Accounts Payable Trial Balance (last day of current period). However, the balance in the AP liability account in GL for the current period does not equal the Accounts Payable Trial Balance (last day of the current period). What is the possible reason?