ID:186096 GXB receiver pin "<name>" uses DC coupling but it does not use <name> I/O standard -- Fitter will automatically assign <name> I/O standard to pin

CAUSE: You assigned an illegal I/O standard to the specified GXB receiver pin. The GXB receiver pin can use only the specified I/O standard when it uses DC coupling. The Fitter will automatically assign the specified I/O standard to the pin.

ACTION: To avoid receiving this message in the future, delete the assignment, or change the assignment to the specified I/O standard.