project constraint

As opposed to other business improvement systems, a clean sheet review only requires minimal definition of the project constraints of scope, schedule and cost.

When controlling project constraint it must be understood that only two of the three constraints can be defined, the third will be determined by the other two.

Traditionally the Project Constraint Model recognised three key constraints; "Cost", "Time" and "Scope".

Some project managers feel that the earned value management technique is misleading, because it does not distinguish progress on the project constraint (i.e. on the critical chain) from progress on non-constraints (i.e. on other paths).