Additional Windchill Capabilities > Windchill Aerospace and Defense > About WADM Configuration Items and Design Solutions > Configuration Level Details > Configuration Level Effectivity
  
Configuration Level Effectivity
Windchill Aerospace and Defense configuration management includes the ability to manage effectivity at the configuration level. This allows you to specify the product-level serial numbers for which a design solution is appropriate for a given configuration item.
An effectivity range is stored on the usage link between a configuration item and the associated design solution. This range specifies the product-level serial numbers for which a design solution addresses the configuration item.
Although a design solution can be associated with a configuration item at any time as a candidate design solution, effectivity is assigned to the usage link between a configuration item and a design solution only when a change action is fulfilled by the design solution. For more information about change actions and the configuration level change management process, see About Configuration Level Change Management.
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The traditional Windchill PDMLink effectivity functionality differs from the Windchill Aerospace and Defense configuration management effectivity because its purpose is to select a revision of a part. The standard effectivity functionality can be used with Windchill Aerospace and Defense, but is likely only applicable in the lower level of the product structure. For more information about standard Windchill PDMLink effectivity, see About Effectivity.