MT4 · Compilation errors
MT4 164 · Function with this name is already defined and has a different set of parameters | YI GOLD
Official meaning
Function with this name is already defined and has a different set of parameters
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.