An object template system is described herein that allows an administrator of an IT management application to define templates that provide a streamlined mechanism for pre-populating IT objects with common values based on business logic and processes. The object template system addresses manipulation of objects both as part of a user interactive session as well as in programmatic workflows, while also allowing for referencing of existing objects to assume integrity of data. A metadata-driven schema allows for portable definitions of simple and complex extensible objects. The system validates these definitions against the extensible types that define the objects to ensure structural integrity. Users can then apply these definitions at runtime to both create and/or update simple and complex management objects. Thus, the object template system allows an administrator to define controlled processes for creating and modifying management objects within a flexible IT management application.