ID:176118 Pin "<name>" is a differential I/O pin but does not have its complement pin. Hence, fitter automatically created the complement pin "<name>"

CAUSE: The Fitter is reporting that a differential pin exists in the design, but the complementary pin does not exist. Therefore, the fitter created the complementary pin for the differential pin.

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