TF221161: There are conflicting definitions of the following work item fields in the warehouse: {1}. These conflicting definitions ...

TF221161: There are conflicting definitions of the following work item fields in the warehouse: {1}. These conflicting definitions come from different project collections. Work items from project collection {0} will not be updated until the conflict is resolved. You can resolve the conflict by making the definitions of the field the same in all project collections, or marking the field as non-reportable in the project collection {0}. For more information, see the Microsoft Web site (http://go.microsoft.com/fwlink/?LinkId=160807).