I received an email from Tiqs seeking clarification for 'reversal trades' done in my account. What does this mean?

All stockbrokers are required by SEBI to monitor and report trading activity that does not take place during regular business hours. One form of deal that stockbrokers are required to record is a reverse trade.

Reversal trades are thought to be fraudulent business transactions in which the same client(s) or group of clients act as both buyers and sellers.

The same client(s) or a group of clients quickly reverse a transaction at trade prices that are vastly different from the original one. One customer gets a significant profit, but the other suffers a financial loss. These deals are noted in a contract that is not liquid.