When unauthorised user is tries to create a relationship, message thrown is incorrect

When an unauthorized user (say user1) tries to create a relationship between two entities (say type1 and type2), the error message thrown is 

user1 is not authorized to perform create relationship-def

The expected message should be 

user1 is not authorized to perform read type-def of category ENTITY type1

The current message should be thrown when an user with read-only access tries to create a relationship.