ID:186095 Can't place GXB transmitter or receiver channels and/or their associated I/O pins due to illegal location or I/O standard assignments or inappropriate device

CAUSE: You made conflicting location or I/O standard assignments to gigabit transceiver block (GXB) transmitter or receiver channels and/or their associated I/O pins, or selected an inappropriate device.

ACTION: Delete or change the conflicting location or I/O standard assignments, or select a different device.