94-649-302 Me. Code R. § 4
Upon receipt of an invoice for services for which the expenditure of funds has previously been authorized, the applicant or the applicant's attorney shall forward the invoice to PDS for processing and payment, together with the relevant authorization. Attorneys shall comply with any procedures established by the Executive Director. The applicant or the applicant's attorney must state that the services were satisfactory and that all applicable reports and other information have been received. The applicant or the applicant's attorney should review the invoice to verify that it conforms to PDS requirements and that the appropriate rates for services and mileage were billed. The applicant or the applicant's attorney is not required by the Commission to advance funds to investigators or other service providers, subject to any professional conduct requirements. The applicant should make every effort to ensure that the service providers include a State of Maine Vendor Code number on each invoice.
94-649 C.M.R. ch. 302, § 4