ID:186099 Can't duplicate GXB transmitter PLL "<name>" because its clock input pin "<name>" is assigned to dedicated GXB transmitter PLL clock input pin location in device

CAUSE: You assigned a gigabit transceiver block (GXB) transmitter PLL clock input pin to the dedicated GXB transmitter PLL clock input pin location in the device. As a result, the GXB transmitter PLL cannot be duplicated because I/O pins from the design cannot be duplicated.

ACTION: Modify the design to delete the location assignment for the GXB transmitter PLL clock input pin.