I'm trying to call this Sharepoint 2013 SOAP WebService from a workflow : https://mysite.sharepoint.com/_vti_bin/Sites.asmx
My workflow is hosted on the same sharepoint online farm than the soap WS I wish to call.
My problem is, when I create the action "Call HTTP Service" in Sharepoint Designer 2013, I don't know where to place the SOAP Enveloppe described in the WSDL.
I've started by defining the web service URL as in the screenshot below, but then I don't know what to put in the request parameter because the only thing I can put in it is a dictionnary. And thus I don't know how to put the soap enveloppe in this dictionnary...
Does somebody have tips on how to achieve this?