ID:186094 I/O pin "<name>" uses 1.5-V PCML I/O standard but does not drive GXB pins -- 1.5-V PCML supported only for GXB receiver or transmitter pin, and clock input pin

CAUSE: You assigned the 1.5-V PCML I/O standard to an I/O pin that does not drive gigabit transceiver block (GXB) pins. The 1.5-V PCML I/O standard is supported only for GXB transmitter or receiver pins, and clock input pins.

ACTION: Delete or change the 1.5-V PCML I/O standard assignment.