ID:275043 Pin "<name>" is missing source

CAUSE: In a Graphic Design File (.gdf), the specified output pin is not connected to a source signal. The Quartus Prime software will connect the output pin to GND.

ACTION: To avoid receiving this message in the future, or if you do not want the Quartus Prime software to connect the pin to GND, connect the pin in the design to a source signal, or delete the pin if it is not used. Otherwise, no action is required.