PandaTip: The terms of this exchange model ensure that each party agrees to fairly evaluate what it offers and each party must adapt its offer until the final exchanges are fair and equitable. Most people participate in an exchange agreement without any written agreement. However, this can cause problems. It is useful to document precisely which goods or services are included in the agreement and who should make them available. In the case of a service, the contract must list the specific mission, hours or tasks to be performed. When the goods are exchanged, you must list the items, the quantity and their condition. Once the terms are agreed, it`s time to put the ink on paper and sign the agreement. After signing, both parties are legally obliged to export and deliver these goods and services. The use of a service exchange contract or an exchange contract is not new. . .