MT5 · Runtime errors
MT5 5305 · Error occurred while creating, deleting or changing the custom symbol | YI GOLD
ERR_CUSTOM_SYMBOL_ERROR
Official meaning
Error occurred while creating, deleting or changing the custom symbol
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.