MT5 · Runtime errors
MT5 4516 · Invalid parameter for sending a notification – an empty string or NULL has been passed to the SendNotification() function | YI GOLD
ERR_NOTIFICATION_WRONG_PARAMETER
Official meaning
Invalid parameter for sending a notification – an empty string or NULL has been passed to the SendNotification() function
Possible causes · YI GOLD suggestions
Parameter types, counts or ranges do not match the function signature.
Troubleshooting · YI GOLD suggestions
Compare each argument and reference mode with the official signature. Validate ranges and preserve relevant failure context.