COBCH1717 Best visible static overload found in <type-name> is <member-name> which has invalid parameter <param-num>

In the following example, there is no compatible match for the call to messageEnd using the arguments supplied. There is a method with the correct name and same number of parameters; however, the second parameter is not a compatible match. Either change the argument to a type compatible with decimal, or change the messageEnd method to accept a type compatible with string as its second parameter.

class-id myClass.
method-id main static.
 invoke self::messageEnd(4 "Installation Complete")
end method.
method-id messageEnd (s as decimal t as decimal) static.
...
end method.
end class.

This error is produced in a context in which a static method would be allowed.