This repository has a small snippet for using Polarion OSLC service with support OAuth dance. You should use Postman >= 9.15.2.

There are variables at the collection level to configure this fragment.

Run 1.Get_RootServices
Afterwards, go through OAuth 1.0 hell starting with 2.1.Get_Consumer_Key
Please note that steps 2.2.Approve_Consumer_Key and 2.4.Authorize_Requested_Token require user interaction, please refer to the Visualize tab for links to open them in the browser

After receiving the access token, go to step 3.1.Get_Servcie_Provider_Catalog and then enjoy your journey through the Polarion OSLC resources