ID:18012 Can't place logic fed by CARRY_SUM primitive "<name>" into a single logic cell

CAUSE: The specified CARRY_SUM primitive contains fan-out to logic that does not fit in a single logic cell. All fan-out logic in CARRY_SUM primitives must fit on a single logic cell.

ACTION: Modify the design by moving the fan-out to the sum output of the CARRY_SUM primitive or simplify the logic fed by the CARRY_SUM primitive.