Order Getting Rejected

Hi - I have used Algo to execute my strategy, my strategy overall SL was 2k once 2k trigged then my strategy should be close, so algo has sent request for exit all order but from Upstox side my Sell leg was exited but Buy legs has been rejected. I want to understand why this is happening? Happy to have a call to discuss instead of chating. So can I request for call back.

Thanks,
Gautam