I have back tested two strategy and today made it live. But I faced "Execution Error" in both of these error and strategy got stopped. I have then manually square off my position in loss. Error details are as follows:
1. 1st time
10:57:47.984207 Entry Limit Order rejected for leg with Symbol=BANKNIFTY2372045600CE and Qty=50. Reason=Too Many Request Sent Order Details- [ Broker order id: 230720025299431, Instrument Symbol: BANKNIFTY2372045600CE, Position: 1, Quantity: 50 ]. Please check your orderbook for other orders as well.
10:57:47.982783 Strategy has been stopped due to unknown error=Too Many Request Sent Order Details- [ Broker order id: 230720025299431, Instrument Symbol: BANKNIFTY2372045600CE, Position: 1, Quantity: 50 ]. Please check your orderbook for other orders as well. Check broker terminal for pending orders.

2nd time

09:42:25.549767 Entry Limit Order rejected for leg with Symbol=BANKNIFTY2372045700CE and Qty=25. Reason=Too Many Request Sent Order Details- [ Broker order id: 230720025113156, Instrument Symbol: BANKNIFTY2372045700CE, Position: 1, Quantity: 25 ]. Please check your orderbook for other orders as well.
09:42:25.548310 Strategy has been stopped due to unknown error=Too Many Request Sent Order Details- [ Broker order id: 230720025113156, Instrument Symbol: BANKNIFTY2372045700CE, Position: 1, Quantity: 25 ]. Please check your orderbook for other orders as well. Check broker terminal for pending orders.

3rd Time
09:57:36.987810 Exit Limit Order rejected for leg with Symbol=BANKNIFTY23JULFUT and Qty=15. Reason=Conversion from Limit to Market was not accepted by the broker. Order Details- [ Broker order id: 230720025086503, Instrument Symbol: BANKNIFTY23JULFUT, Position: 1, Quantity: 15 ]. Please check your orderbook for other orders as well.
09:57:36.986319 Strategy has been stopped due to unknown error=Conversion from Limit to Market was not accepted by the broker. Order Details- [ Broker order id: 230720025086503, Instrument Symbol: BANKNIFTY23JULFUT, Position: 1, Quantity: 15 ]. Please check your orderbook for other orders as well. Check broker terminal for pending orders.

What is the reason for this error. Please Guide me or Correct the issue at your end.