ID:20448 Atom "<name>" is part of a carry chain that forms a loop. Please disconnect and reconnect the carry out of one of the atoms in the chain.

CAUSE: A carry chain is present where each carry out of atoms in the chain is connected to a carry in of an atom in the same chain forming a loop.

ACTION: Either completely disconnect the carry out of an atom in the chain or reconnect it to a carry in not in the same carry chain.