Can LTPC and Full_D30 Feeds Be Subscribed Simultaneously?

Developer API
1

Hello Upstox Team,

I am working on a real-time market data application and I need a clarification regarding your WebSocket feed subscription limits.

1. Is it possible to subscribe to the LTPC feed and the Full_D30 feed at the same time?

For example, can one WebSocket connection subscribe to ltpc mode while the other subscribes to full_d30 mode for the same instrument?

2. If not, can I create two separate apps in the Upstox Developer Console and generate two different access tokens — one for LTPC and one for Full_D30 — and run them simultaneously from the same account?

I want to understand whether this is technically supported or restricted.

3. Or does Upstox enforce a rule where I must choose only one type of feed per user/app, and I cannot run LTPC and Full_D30 together under any circumstances?

My goal is to use LTPC exclusively for clean Time & Sales (trade prints) and Full_D30 for market depth analysis, so I want to check what combinations are officially supported.

Any guidance on the recommended approach or limitations would be very helpful.

Thank you!

2

Yes, this is possible.
You can refer to the Upstox SDK streamer functions for guidance on how to achieve this:

Here is a sample code snippet demonstrating how to subscribe to multiple instruments with different modes:

import upstox_client
import time


def main():
    configuration = upstox_client.Configuration()
    access_token = <ACCESS_TOKEN>
    configuration.access_token = access_token

    streamer = upstox_client.MarketDataStreamerV3(
        upstox_client.ApiClient(configuration))

    def on_open():
        streamer.subscribe(
            ["NSE_EQ|INE020B01018"], "full")

    # Handle incoming market data messages\
    def on_message(message):
        print(message)

    streamer.on("open", on_open)
    streamer.on("message", on_message)

    streamer.connect()

    time.sleep(5)
    streamer.subscribe(
        ["NSE_EQ|INE467B01029"], "ltpc")


if __name__ == "__main__":
    main()

In this example, the instrument NSE_EQ|INE020B01018 is subscribed in full mode initially, and after a short delay, the instrument NSE_EQ|INE467B01029 is subscribed in ltpc mode.

Thanks!