MT5 · Trade return codes
MT5 10018 · Market is closed | YI GOLD
TRADE_RETCODE_MARKET_CLOSED
Official meaning
Market is closed
Possible causes · YI GOLD suggestions
Trading session has ended or symbol, account or automated-trading permissions are disabled.
Troubleshooting · YI GOLD suggestions
Check server time, gold trading sessions, holidays and terminal/EA permissions. Wait for availability instead of repeatedly retrying closed-market requests.