Understanding Constraint-Based Planning

When running unconstrained plan, The MRP generates a supply plan based on the supposed infinite availability of materials and resources.

When running a constrained plan, material and resources availability is limited, you can choose to enforce capacity constraints or to enforce demand due dates.
  • Enforce capacity constraints: Your plan will not violate supplier, manufacturing and transportation capacity. It will not result in material shortage but it may violate demand due dates to respect capacity constraints.
  • Enforce demand due dates: This plan may violate capacity constraints (e.g. overload resource and supplier capacity) to respect demand due dates.
Constrained plans will help you to make decisions such as sourcing new suppliers, hiring new resources, buying new equipment...

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