MT5 · Runtime errors
MT5 65536 · User defined errors start with this code | YI GOLD
ERR_USER_ERROR_FIRST
Official meaning
User defined errors start with this code
Possible causes · YI GOLD suggestions
Determine the cause from the official meaning, the triggering function and terminal logs.
Troubleshooting · YI GOLD suggestions
Inspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description.