It is my aem instance issue I guess.I am able to iterate simple and custom class map in my colleagues machine.I tried with your code as well but it dint worked in my machine.

Thanks Smac and Maruthid, I would go through the documents links provided by you guys and try to understand which apporoach would be better for my use case

We have confirmed this is indeed a product bug and DayCare ticket has now been raised.

Hi Vivek,Thank you for your reply. I am able to debug and root cause this issue. When we click on "Connect to Salesforce" button in cloud confifguration AEM calls this js file /libs/mcm/salesforce/widgets/cloudservices-workflow-widgets/js/restAPI.js, which internally calls a servlet(/libs/mcm/salesforce/customer) inside which POST request are made for getting access_token and refresh token. By following the Adobe documentation my connection was failing everytime and was getting the same error as...

You can try leveraging http://adobe-consulting-services.github.io/acs-aem-commons/features/delegating-servlet.html . I feel..if you customize it appropriately, you can validate it for paths and apply per side using config factory

Checking to see if you had any luck? We are looking to integrate IBM Watson Explorer (WEX) and might be able to leverage some knowledge with you solution.