Related to payment voucher

XYZ is a company with multiple branches. Each branch has its own separate ledger and purchase voucher entries.For example XYZ ( UP) , XYZ ( Hr.) . However, the financial statement does not mention which branch the payment is for and  The company has not made the full payment at once, they have divided it into halves. Therefore, I cannot match the payment amount in the voucher. To determine which branch the payment is for please give me solution so this . 

Thanks