SECTION 28

(1) Where a framework agreement sets the minimum and maximum supplies or services, with a determined cost or quantity, that may be ordered over a given period that shall not exceed that for the use of relevant funds, the quantities of the services or supplies having been specified, the said agreement shall be executed progressively as purchase orders are issued. (2) Orders are written requests sent to the holder of the framework framework agreement. They shall specify the services set out in the framework agreement, and whose execution is being requested, as well as the quantity requested. (3) Where orders concern a given category of services or supplies, but do not specify the quantity or overall cost of the orders, the framework agreement shall give rise to subsequent, contract-based orders. (4) Subsequent contract-based orders shall specify those characteristics and terms of execution of the services requested that are not set in the framework agreement. They may not give rise to substantial changes in the provisions of the framework agreement. IV.2. Multi-Year or Multi-Phase Contracts