I was seeing this issue as well and so was this individual: Webservice Connector - Update Account - empty requestBody - #13 by udayputta
I deleted my operation and re-created it and this seems to be helping, maybe give that a try
I was seeing this issue as well and so was this individual: Webservice Connector - Update Account - empty requestBody - #13 by udayputta
I deleted my operation and re-created it and this seems to be helping, maybe give that a try