When importing type information from a .NET assembly, the compiler may encounter symbols that do not conform to CLS specifications. One example of this is case-sensitive versus case-insensitive identifiers. Another example is having a property in a class with the same name as a method or field in the same class. This error message indicates that same-named symbols were found in the same scope (members of the same class or interface) in an imported assembly and that only one of them will be accessible from Delphi syntax.