ID:171128 Signal "<name>" <type> security level "<number>", but feeds node "<name>" which is in a region with a lower security level of "<number>"

CAUSE: You attempted to compile a design with incorrect assignments. The specified signal must be lowered to at least the security level of the region that it feeds.

ACTION: Add an LL_SIGNAL_SECURITY_LEVEL assignment to the signal, and then try to compile the design again.