ID:23562 The top-level pin "<name>" is driving I/O input buffer "<name>" and other <number> fan-outs. The top-level pin is allowed to drive only one I/O input buffer.

CAUSE: The specified top-level pin pin has too many fan-outs. The top-level pin can drive only one I/O input bufferprimitive.

ACTION: Connect the specified top-level pin to only one I/O input buffer.