A subcontractor overview similar to the subcontractor overview in the contract with the following columns is required: Contract, contract amount, order amount, LS, RS, ZS, Sub 1, Sub 2, Sub 3... For each contract and sub, the sum of the payments, the sum of the outstanding invoice amounts and the sum of the payments that are still planned should be displayed in each line. At the very bottom, a summary line for all contracts, also with these three balances per subcontractor, on the far right, a summary column, which shows the three balances across all subcontractors for each contract.