If M1.3 map is run with the -u option (don't remove unused logic) it may fail with the following error:
FATAL_ERROR:x4kma:x4kmacarry.c:681:1.96.10.4 - COUT0 signal still exists after mapping on carry CLB: nlmsgc1_un33$c1_2$$cy4. Process will terminate. Please call Xilinx support.
ソリューション
In the design manager, select Design -> Implement...