A retroactive baseline change adjusts budget, earned value, actual cost, or related records associated with a previously reported period. It is not automatically prohibited. However, it should remain exceptional, receive
A schedule changes PMB dates, logic, or time-phased budget only when the program approves a corresponding baseline change. Routine status updates and forecast revisions may move current dates, change float,
A performance measurement baseline, or PMB, is the time-phased budget plan used to measure the execution of authorized project or contract scope. It integrates scope, schedule, resources, and budget so