ID:170090 Routing constraints for signal "<name>" seem to be causing unresolvable routing congestion. The constraints for the signal were removed
CAUSE: The Fitter is having trouble routing the design with routing constraints for the specified signal. To improve chances of a successful route, the routing constraints were removed.
ACTION: If you created routing constraints by hand, revise them to avoid congestion. If the circuit is still unroutable, consider removing all routing constraints.