The next step realizes the search for UI components including the domainReference attribute. This attribute helps to reduce the result set amount to restrict the discovery to optimize speed. In this case the Web service operation has to refer to a concrete domain class in which context they can be used. The use of the domainReference attribute requires a Web service operation described by a semantic description language. As a result, all UI components are returned, which refer to the same domain class. However, the UI components of the result set do not provide any information on the equality of the interfaces. Therefore the comparison of the interfaces is accomplished in the next step. The comparison of the interface structure is applied at first to all UI components that refer the same domain class as the service and in a second step to all available UI components registered in the repository, but have a fixed operation with a defined set of parameters.