Use this dialog box to periodically divide costs over more than one period. This function can for example be used for quarterly based costs and revenues. The voucher must be saved in Voucher Entry before you can enter any accrual information. The GL updating routine creates a period allocation voucher for each period to which the costs or revenues are allocated, including the source voucher's period, if allowed by the parameter specified in the General Ledger/Update Voucher/Update Parameters window. The posting type GP2, Accrued Cost/Revenue, controls the account to be used as a contra account.