Constraints, Project constraints are restrictions that affect the project by imposing limitations on costs, resources or project schedule. For example, a predefined budget is a constraint that may limit staffing and schedule options. Through the imposed limitations constraints are important data input for the Scope Definition and Planning as part of the Project Scope Management.

Examples of constraints:

• contractual obligations
• cost, time, quality
• actual technological level

In RationalPlan Project Management Software a special step in the Project Guide is dedicated to Assumptions and Constraints documentation.