Web service operations often include data that you do not want to use in your mapping. You can use the default request message for the operation or customize the request message to specify the data that you want to enter the data flow.
The request message is in XML format. To customize the request message, you can begin with a template that includes the necessary formatting for the message. The request message template shows the contents for the selected operation.
Copy and paste the template into the Request Message editor pane and then revise the message.
For example, if you want to include transactions occurring between January 1, 2016 and March 31, 2016, you can enter the Effective_From and Effective_Through values in the request message, as shown in the following image:
You can parameterize the request message using in-out parameters. For example, instead of using specific Effective_From and Effective_Through dates in the message, you can use $$Effective_From and $$Effective_Through parameters. You need to create the in-out parameters in the Parameters panel before you can use them in the request message.
For more information about in-out parameters, see the "Parameters" section in
Be sure you use well-formed XML formatting in the request message. You can validate the message to be sure that the XML matches the structure expected by operation.