Additional Windchill Capabilities > Service Information Management > About > S1000D Library Management > Services and Models
  
Services and Models
Managing services and models differs from standard Windchill library management in the following respects:
Duplicate services are not permitted under the Services and Models folder of a particular product.
Models must be inserted below an existing service. Duplicate models are not permitted under a particular service.
Removing a service, also removes all models associated with that service.