In a Web Service Consumer transformation, the Endpoint URL is the URL of the host that you want to access. By default, this takes the URL specified in the WSDL file that is used to create Web Services Consumer transformation. This URL will be specified in the Service section of the WSDL file.
To parameterize that URL instead of the endpoint URL, do the following:
What can we do to improve this information (2000 or fewer characters)