An indicator in a product structure which specifies the versions at which a component part is used These indicators generally specify a range of either dates, serial numbers, or build lots Effectivity indicators are typically considered as 'conditions' on the parent-child relationships in a standard product structure
Effectivity is an interval of validity (date span, serial number sequence etc) of a component, independent of any product structure consideration Clearly any assembly must take into account the individual effectivities of its components This task is one of the Configuration Management functions
(Ticaret) The planned date for component changes to be made to a bill of material or operation changes to a routing. Planning, scheduling and costing systems consider effectivity dates when projecting material requirements, loading plant work centers or performing cost rolls