The mapping of CLR type to EDM type is ambiguous with EF 6 & 5?

Question

Please any one can help me to fix this error?

Schema specified is not valid. Errors:

The mapping of CLR type to EDM type is ambiguous because mult

Answer 1

For me this was because I was attempting to access a type with the same name on the wrong context instance.

Say both ContextA and ContextB have SomeType. I was trying to access ContextA.SomeType on an instance of ContextB.