ID:20424 A set_max_time_borrow -exact assignment of <Assignment Value> for "<Assignment Target>" at <Assignment SDC Source> exceeds the maximum physically possible borrow amount in at least one case. For example, it is not possible to borrow more than <Max Possible Borrow Example> at <Example Node> for clock <Example Clock Domain>, <Example Corner>. In all such cases, the borrow amount will be limited to what is possible on the device.

CAUSE: A set_max_time_borrow -exact assignment specifies too much time borrowing for the current clock rate.

ACTION: Alter the set_max_time_borrow constraint to use less time borrowing, or remove the -exact option to allow the Timing Analyzer determine the borrowed amount automatically.