This is often used when the project is considered a high risk and there is concern that the procurement team may not be able to attract bidders. This type of contract protects sellers from risks, because the supply agency supports them all. There is a clause that states that the seller is paid for all the plus fees, plus a fee that is not based on cost. For example, the contractor will have paid all his fees, plus a tax of 5,000 USD. The purchasing team uses the answers to the first three questions listed above to determine the approach to sourcing goods or services and the remaining questions to determine what type of contract is most appropriate. Just as the project has a workspace that defines what is included in the project and the work outside the project, suppliers and suppliers have a volume of work that defines what they produce or provide to the company. (Partners generally share the scope of the project and may not have a separate workspace.) Often, changes occur in the project, which requires changes in the scope of the contractor. The way in which these changes are managed over the life of the project is generally documented in the contract. Early registration of these changes, documentation of what has changed and the impact of the amendment on the contract, and the development of a series of changes (contract modification) are important to maintain project progress. Conflicts between team members can occur if the changes are not documented or if the team cannot agree on the change.