Primavera P6 Constraints
Primavera P6 allows an activity to have both a primary and a secondary constraint and date.
Open Plan permits both types of constraints on the same activity as long as the P6 constraints are not both start or finish constraints (that is, one must be a start constraint and the other must be a finish constraint).
| Primavera P6 Constraint | Open Plan Constraint |
|---|---|
| As late as possible (ALAP) | Activity type = As late as possible (ALAP) |
| Finish on or after | Target finish = not earlier than |
| Start on or after | Target start = not earlier than |
| Start on | Target start = on target |
| Mandatory start | Target start = fixed target |
| Finish on | Target finish = on target |
| Mandatory finish | Target finish = Fixed target |
| Start on or before | Target start = not later than |
| Finish on or before | Target finish = not later than |