According to numerous studies in the IT area, the number of different software systems, which use web technologies, such as web-services is constantly growing. According to W3C defini-tion, webservice is a software system designed to support interoperable machine-to-machine in-teraction over a network [1]. In general, there are three main instances that interact within a web service: service requestor, service provider, service broker. As the service is developed, performer (service provider) registers it in the directory (service broker) where it can be found by the potential customers (service requestor). As the customer found the appropriate service in the directory, he can import the WSDL specification for further usage in the process of development his software. WSDL describes the format of requests and responses exchanged between the customer and per-former in the process of work. The following standards are used to ensure interoperability: