A system error occurred in Toss Securities' mobile trading system (MTS) and web trading system (WTS) in which the available won order amount differed from the actual amount by as much as several million won.
According to Toss Securities on the 27th, from 8:17 p.m. to 8:48 p.m. on the 26th, for about 31 minutes, asset information such as the available order amount and transaction history on the home screens of the MTS and WTS was displayed differently from the actual figures.
The cause was a temporary error in the margin management system. A Toss Securities official said, "Real-time price and bid/ask inquiries were provided normally," and "There was no impact on stock trade orders."
Earlier, on some online communities, users posted that they experienced errors such as the available won order amount showing 2 million won when it should have been 0 won, or appearing about 4 million won less than the actual amount.
The errors have now all been resolved, and the service can be used normally. Toss Securities said, "We apologize to customers who experienced inconvenience while using the service," and "We will thoroughly inspect the entire system to ensure the problem does not recur."