MT4 · Runtime errors
MT4 4050 · Invalid function parameters count | YI GOLD
ERR_INVALID_FUNCTION_PARAMSCNT
Official meaning
Invalid function parameters count
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.