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PMI Scheduling Professional · PMI
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- The To-Complete Schedule Performance Index (TSPI) calculates the schedule efficiency required on all remaining work to meet a target completion date. It is the schedule equivalent of the cost TCPI. If TSPI is significantly greater than 1.0, achieving the target date requires unrealistically higher productivity on remaining work, signaling that the target date is likely unachievable without schedule compression or scope reduction.