ID:11684 Differential I/O pin "<name>" does not have a complementary pin. As a result, the Fitter automatically creates the complementary pin "<name>"

CAUSE: The specified differential pin does not have a complementary pin. As a result, the Fitter automatically creates the complementary pin for the differential pin.

ACTION: No action is required. To avoid receiving this message, use the differential buffer primitives to create the positive and negative pins of a differential pin pair.