Do I need to update my WSDL version if I’m using SOAP integration?

April 28, 2017 | by

Yes.  The marketoGUID field will only be returned in activities when using the WSDL version 3.1 or later.  The new URI will follow this pattern: https://{munchkinId}.mktoapi.com/soap/mktows/3_1  It may also be obtained through the Admin->Web Services menu in your subscription