Complete a contract usage agreement. Government entities (federal, state, local, or Tribal) must use the contract usage agreement (PDF, 445KB).This guide breaks down the purpose of this CoOp agreement, what kind of things it lays out, and what it will take to improve your terms. Amazon Customer Agreement. Dated: December 6, 2024. This page provides guidance to successfully upload documents that may be required for verification. The document can be requested during account registration. A competitive solicitation process must be used for all purchases of goods and services unless there is an exception listed under RCW 39.26.125. Any person who wants to access the Site and use the Services to sell items must accept the terms and conditions of this Participation Agreement without change.