ID:16721 Did not propagate pin attribute from lower-level pin to top-level pin "<name>"

CAUSE: You compiled the current design. During the compilation, the Quartus Prime software propagated a pin attribute from the specified lower-level pin to a top-level pin. However, the lower-level pin is connected to more than one top-level pin and the Quartus Prime software can propagate the pin attribute to only one top-level pin; therefore, the Quartus Prime software did not propagate the pin attribute to the specified top-level pin.

ACTION: If you want the pin attribute in this top-level pin, make the pin attribute explicitly to the top-level pin and do not rely on the Quartus Prime software to automatically propagate the pin attribute. If the lower-level pin should connect only to this top-level pin, correct the multiple connections in the design. Otherwise, no action is required.