------------------------------------------------------------------------------- Error code: VFAV(1) Error: alias clause lists an operator for a feature such that it is not a query or its argument number is not 0 for unary operator or its argument number is not 1 for binary operator or class has other feature with the same alias name and argument number. What to do: ensure that feature is a query and has no arguments for unary operator or has one argument for binary operator and class has no other feature with the same operator name and the same number of arguments. Class: BB Feature: g alias "+" (i: INTEGER_32): INTEGER_32 Version from: DD Feature: f alias "+" (i: INTEGER_32): INTEGER_32 Version from: CC -------------------------------------------------------------------------------