Service Interface is not getting activated
I have created service interface with one message type and one External Defination and it is a synchronous.When I am trying to activate it, am getting below error,
Service interface reference messages modeled in the Enterprise Services Repository (message types, error message types) and imported messages (external messages, RFC messages, IDoc messages). An ABAP proxy cannot be generated
I have tried to activate only External definition(Request and Response) and it got activated.
I have tried to activate only /message type(Request and Response) and it got activated.
Any input on this.