Additional Windchill Capabilities > Windchill Aerospace and Defense > Administration and Configuration > Managing Effectivity > Creating a Part for Effectivity Context
  
Creating a Part for Effectivity Context
In order for the configuration level effectivity features to be enabled, the product structure must have a part (usually an end item) to give the effectivity context. This part is usually the top assembly of the product structure. To create a part for effectivity context, use the following procedure:
1. Create a new part and specify a value of Serial Number for the Default Trace Code attribute in the New Part window.
2. Click Next and specify that the part is an end item, if desired.
3. Fill in all other required fields, specify Effectivity, and then click Finish. Note the part number for the change directive effectivity context.
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If you do not want to use the out-of-the-box part subtypes, you can create your own upper-level part subtype to assign to your part.