How do I fill this out? Solicitation process must be registered in the City's eProcurement website prior to issuance of a contract, agreement or purchase order.A submission agreement is a contract between two parties that establishes the use of arbitration to settle any disputes that may arise between them. Administrative Fees a. The Contractor shall pay to the WSCA-NASPO Cooperative Purchasing Organization. A purchase order agreement protects the seller in the event of nonpayment as it is proof of the request and contracted price. (6) Fill in the date the "Income Withholding Order" was signed (Item 10 on the Order). Leave the rest of the form blank. Agreement the total fixed purchase price as set forth in the Agreement.