6.1 Payment mechanisms are documented and are clear and well understood by all parties (including incentives, penalties, and non standard charges).
6.2 Payment processes are well defined and efficient; appropriate checks and authorisation processes are in place for paying invoices.
6.3 The costs of the services delivered and contract management costs are mapped against budgets and allocated appropriately.
6.4 Payment changes after the contract is let, for example from contract variations or benchmarking/market testing, are made using contractual provisions and demonstrated to provide value for money.