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Windows Workflow : Dependency Property "does not define a static dependency property with name"

If you encounter the below exception while registering a DependencyProperty "Error 103 Could not create activity of type 'xxxxxxxxxxxxxx'. System.ArgumentException: Type 'xxxxxxxxxx' does not define a static dependency property with name 'xxxxxxProperty'. Parameter name: ownerType    at System.Workflow.ComponentModel.DependencyProperty.ValidateAndRegister(String name, Type propertyType, Type ownerType, PropertyMetadata defaultMetadata, Type validatorType, Boolean isRegistered)    at System.Workflow.ComponentModel.DependencyProperty.Register(String name, Type propertyType, Type ownerType)    at xxxxx..cctor()" Fix: If you are registering Dependency Property with name 'XYZ' then the declaration should be exactly like this, public static DependencyProperty XYZProperty = DependencyProperty.Register("XYZ", typeof(bool), typeof(ApprovalWorkflow));         public bool IsRestarted         {             get { return ((bool)(Get