Simple: GUID (4.0.0)

Library: RTN_Common (http://www.modeldev.restauranttechnologynetwork.com/models/v4)

• Dictionary
• Where-Used
• Errors & Warnings

Direct Where-Used (Entities that directly reference GUID)
Discount (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Core Object
ProfileStatusHistory (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Core Object
AssociatedProfile (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Core Object
Company (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Business Object
ThirdPartySystem (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Business Object
Profile (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Business Object

Indirect Where-Used (Entities that indirectly reference GUID)
Pricing (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Core Object
CustomerDataResource (http://www.modeldev.restauranttechnologynetwork.com/models/v2)	REST Resource
Person (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Core Object
Customer (http://www.modeldev.restauranttechnologynetwork.com/models/v4)	Core Object