Historical expired-options API returning 401 despite token update

Hello Upstox Support, I am validating historical options-market data access for a research and paper-trading application. Our read-only requests to the /v2/expired-instruments/* API endpoints consistently return HTTP 401 with the response: “Invalid token used to access API” We have updated the access token and repeated the test, but the issue persists. Live option-chain access does not establish historical expired-contract access.