Shane and Sachin,
The original post on this thread from Dafydd pertained to getting production information for TINs, NPIs and TIN/NPI combinations, specifically around why, in some cases, TIN's are hidden (XXXXXXX) when using a QCDR or registry token. Dafydd was using production endpoints...
That's quite different than questions surrounding test scenarios using the Developer Preview (DevPre) test environment and endpoints that access it
There are several threads running about test scenarios, particularly pertaining to Opt In status. For information about that topic, please follow
... which both of you appear to be following. If you feel none of the existing threads address your situation, please start a new thread with your specific issue.
Regards
Craig
QPP Team