Not in 6.2,
Thanks for replying.
If we have such a requirement, do we have to write custom JS code to invoke WS in Code Editor section of Rules Editor?
Is there any tutorial in this direction?
I don't think there is any tutorial in this direction. Although the closest thing out there is Tutorial for custom Function in rule editor.
Drawback: Function returns only 1 output.
If you want you can look it here:https://helpx.adobe.com/aem-forms/6-2/rule-editor.html#custom_functions
If you have to call web service that requires authentication, you will have to write Java code. I once wrote OSGI bundle and used SAAJ API to construct the WSDL request