The time at which payment is due for a purchase other than construction services by a local governmental entity must be calculated from:(1) The date on which a proper invoice is received by the chief disbursement officer of the local governmental entity after approval by the governing body, if required; or
(2) If a proper invoice is not received by the local governmental entity, the date:(a) On which delivery of personal property is accepted by the local governmental entity;
(b) On which services are completed;
(c) On which the rental period begins; or
(d) On which the local governmental entity and vendor agree in a contract that provides dates relative to payment periods;
whichever date is latest.
