ID:18735 The <Wrong command that was used> command should not be used on an <Port direction of the target boundary port> boundary port of a partition. You can use <Correct command to be used> instead.

CAUSE: The set_input_delay -blackbox should be applied to output partition boundary ports. The set_output_delay -blackbox should be applied to input partition boundary ports.

ACTION: Replace the SDC constraint that was used with the correct one.