ID:170210 Carry-chain of <number> logic cells and starting on logic cell "<name>" could not be split into legal LABs. The chain will be broken into multiple chains in order to make it legal

CAUSE: The Fitter cannot split the carry chain of the specified number of logic cells that starts on the specified logic cell into legal LABs. As a result, the Fitter will break it into multiple carry chains.

ACTION: Modify the design if there are conflicting location assignments on the chain. If the carry chain is registered, verify that there are not an excessive number of register control signals on the chain.