MT5 · Runtime errors
MT5 4801 · Unknown symbol | YI GOLD
ERR_INDICATOR_UNKNOWN_SYMBOL
Official meaning
Unknown symbol
Possible causes · YI GOLD suggestions
Indicator, chart or history data is unavailable or handles, parameters and periods are incompatible.
Troubleshooting · YI GOLD suggestions
Verify symbol, timeframe, indicator handle, BarsCalculated and copied element counts. Wait for data availability rather than filling missing prices with zeros.