apple watch cellular connection.
you have reached the maximum allowed limit of watches on jio network and it shows the same on airtel network.
Apple Watch Series 4, watchOS 7
So that is consistent response 24/7 - and over several different carriers as well? In that case try restarting your watch.
If the issue still persists after that, you could try going back to factory settings by unpairing and then pairing the watch with your iphone again. Start from here:
Unpair and erase your Apple Watch – Apple Support