The Response Processing step is similar to the Request Processing step. This step specifies how the response message from the native service is to be transformed or processed before it is returned to the consuming application. Like the Request Processing step, you can configure the Response Processing step to perform message transformations using a specified XSLT file or by passing the message to a webMethods IS service. You can also use this step to return a customized error message to the consuming application when a SOAP fault occurs. (CentraSite provides a set of context variables that you can use to incorporate specific details about the transaction into the error message. You might use these variables to include information such as the time and date of the error, the consumer identifier, and/or the requester user ID.)