1. A method for generating a Service Component Architecture (SCA) module with Service Oriented Architecture (SOA) model elements, said method comprising: associating an activity of at least one activity with a service of at least one service; wherein a service model corresponds to a process model, wherein the process model comprises the at least one activity and a process flow, and wherein the service model comprises the at least one service and at least one service operation definition; determining a service operation definition of said at least one service operation definition that specifies an interface of the service associated with the activity, wherein said determining the service operation definition comprises: discovering more than one service operation definitions of said at least one service operation definition that specify a respective interface of the service associated with the activity, acquiring user input data that selects one service operation definition out of said more than one service operation definitions, and identifying said one service operation definition as the service operation definition that specifies the interface of the service; discovering no service of said at least one service that has a same origin as the origin of the activity; acquiring data that selects another service of said at least one service, wherein said acquired data is selected from the croup consisting of a user input, default data, predefined data, and a combination thereof; rendering a message specification of the activity from the interface of the service; a processor of a computer system producing the SCA module with the SOA model elements, wherein the SOA model elements comprise said at least one activity, the process flow, and the message specification; and communicating the produced SCA module to a user of the computer system.