MT5 · Compilation errors
MT5 278 · Overriding the default parameter (different values in declaration and implementation) | YI GOLD
Official meaning
Overriding the default parameter (different values in declaration and implementation)
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.