+ "CANNOTLINKVDUANDVDU": "You can't link a vdu with a vdu",
+ "CANNOTLINKCPANDCP": "You can't link a cp with a cp",
+ "CANNOTLINKVNFVLANDVNFVL": "You cant link vnf_vl with vnf_vl",
+ "CANNOTLINKVNFVLANDONTCP": "You cant link vnf_vl with int_cp",
+ "CANNOTLINKINTCPANDVNFVL": "You cant link intcp with vnf_vl",
+ "CANNOTLINKINTCPANDINTCP": "You cant link intcp with intcp"