A program system must be flexible enough to permit prompt changes at any time.
Frequent review is essential to determine whether revision is necessary.
It is not possible to foresee all future circumstances, events, and emergencies that may require a change. A high degree of discernment must be applied to distinguish real program changes from mere lack of accomplishment or lack of ability to perform work. The latter demand administrative action and not a program change. Recommendations by operating officials for a change in a program should have the same careful consideration that led to the adoption of the original schedule. This chapter is concerned with revisions that take place within the current budget year which change the current year, or, in exceptional cases, with changes in the budget year, or long-range program, that cannot be deferred until the next budget formulation process.