On the basis of the framework order, customer orders (`executive releases` or `release orders`) and billing positions can be placed as needed until the contract is executed, the end of the order period is reached or a specified maximum order value is reached.  To protect your business, it`s a good idea to know about these common and important agreements. A general agreement is one of the most important business documents you can have, and here`s the reason. Orders and sales contracts are the two legal documents used when purchasing goods. A sales contract is also used for real estate transactions. The document used to purchase services is more often referred to as a contract or service contract. Find out what a real estate sales contract does and what it should include.