A web service has been developed. Using the WSDL, the client was created in the same Integration Server and other Integration Server. This functions very well.
The problem currently is that the client created in a non webMethods platform ends in a error stating that the web service does not exist. ([ISS.0088.9122] Service … does not exist" )
Currently this problem is solved. This was because of the missing namespace. This was corrected by using a Qualified Element setting in my schema of the input and output document.