ID:15815 clock[<number>] input port of GXB Transmitter PLL <name> is fed by <name>. This signal can be fed only from an input pin

CAUSE: The clock input port of the specified gigabit transceiver block (GXB) transmitter PLL is fed by the specified signal which is not an input pin.

ACTION: Modify the design so that the clock input port of the specified GXB Transmitter PLL is fed by an input pin.