Quick Answer (TL;DR)
To create a PE-TM mapping chain on the Smartping/Videocon DLT portal, log in and navigate to the PE-TE Chain tab. Click New Request, enter the Telemarketer ID 1702157373640103575 (SMSINDIAHUB), and click Submit. Wait for the SMSINDIAHUB team to approve the chain, then request final approval on your DLT portal.