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...Paying undisputed invoices in days supplementary q a for public sector buyers contents verification of page payment paid late and statutory interest publication requirements monitoring compliance references to you this document refers contracting authorities particularly those administering the how long do i have confirm an invoice as valid contracts regulations pcrs place requirement on include provisions requiring be verified timely manner accordance with undue delay is not sufficient justification failing regard therefore should make every effort verify relevant without guidance published by cabinet office which must suggests take no more than calendar from receipt e received at designated address also model contract term that event confirming within suggested shall regarded available here there definition compliant or correctly presented one only pay sent including email invoicing mechanisms ppn provides further can found are responsible making sure your own suppliers first tier pr...