Service definitions can be created directly in the Service Resource Flow Description folder or during the creation of Service Definition Diagram.

During the creation of the service definition, the creation wizard presents two of roles: "Consumer" and "Provider".

The "Consumer" is initiators of the service.

The "Consumer " notion is used to indicate that a service definition exists between the consumer and the provider. When the consumer sends information requesting a particular service, a response is expected from the "provider".