Troubleshooting Empty Response & JSON Parsing Error for LTP Calls in Angel One SmartAPI

[mdzainj]

I am consistently receiving an empty response or invalid JSON from the getLTP endpoint for all NIFTY and BANKNIFTY futures contracts, even after 9:30am on expiry and non-expiry days. Token and tradingsymbol are accurate and match the downloaded instrument master. LTP fetch works for equities but not index futures.

• Did LTP endpoint structure change, or is this a known API problem with weekly/monthly rollovers?
• Is there a workaround or alternate API for index derivatives LTP?
• When will LTP become reliably available for NIFTY/BANKNIFTY?

Thanks,
Mohammed Zain