I'm building a REST service in which I use a Set Context Variable "x" with Content-Type "text/xml; charset=utf-8" and valid XML content. Then I proceed to "Apply XSL Transformation" to this variable "x" with a valid XSLT Stylesheet. But I'm getting the error "Message not XML; cannot perform XSL transformation". Why?
Am I doing something wrong or is it not possible to use XSLT if the service is not SOAP?