Windchill REST Services > Windchill REST Services Domain Capabilities > Examples for Basic REST Operations > Examples for the PTC Effectivity Management Domain > Retrieving Unit Effectivities of a Part
  
Retrieving Unit Effectivities of a Part
This example shows you how to retrieve unit effectivities, such as, block, MSN, lot, serial-number, of a part. Use the following GET request.
URI
GET /Windchill/servlet/odata/ProdMgmt/Parts('OR:wt.part.WTPart:156011')?$expand=Effectivities/PTC.EffectivityMgmt.UnitEffectivity HTTP/1.1