You can generate the 2GUD Application ID and Application Secret manually by following the below mentioned steps
Steps to get your 2GUD API details
1) Click on Seller APIs - Developer Admin and login with your Flipkart Seller Account credentials
2) Click on Register New Application
3) Enter the Application Name and Application Description as Seller API
4) In the drop down for Application Type choose self_access_application and click on Register Application.
5) Once the Application generates the API details, the page will redirect with the Application ID and the Application Secret.
6)Copy the Application ID and the Application Secret and past it in the space provided in Flipkart Settings on Browntape.
So just by doing a few steps you can manually get the 2GUD seller APIs.