## Solution Life Cycle Duration Doesn't Match Schedule Constraint

**I set a Schedule Constraint of 24 months. Why does the Solution Panel show a 22-month schedule for the life cycle?**

There are several reasons this could be happening, but the most likely cause is that you entered a target probability of more than 50% for the Schedule constraint. For example, if you enter a time constraint of 24 months at a target probability of 90%, you are asking SLIM-Estimate to calculate a risk-buffered solution that provides a 90% probability that the project will not exceed 24 months: in effect, a risk-buffered solution.