ID:15313 pexpout port of atom "<name>" must positively feed pexpin port

CAUSE: The pexpout port of the specified atom is not connected to the pexpin port of another atom. However, the pexpout port must be connected to another atom's pexpin port.

ACTION: If you are using an EDA tool, contact the technical support for the EDA tool regarding this message. For further assistance contact Intel Technical Support by creating a Service Request at www.altera.com/mysupport.