ID:15149 GXB transmitter channel atom "<name>" must have source at input port <name>[<number>]

CAUSE: The specified input port of the specified gigabit transceiver block (GXB) transmitter channel atom is not fed by any logic; however, the GXB transmitter channel atom must have an input port source. This error usually occurs when you instantiate a megafunction directly in a text file rather than using the MegaWizard Plug-In Manager .

ACTION: Modify the design so that the specified input port of the GXB transmitter channel atom has a source. To avoid receiving this message in the future, Intel recommends using the MegaWizard Plug-In Manager.