ID:176473 DDIO_OUTPUT_REGISTER_DISTANCE ACF setting is assigned an illegal value of <number>. Legal values are 1 and 2.

CAUSE: The Fitter detected an illegal value assigned to DDIO_OUTPUT_REGISTER_DISTANCE.

ACTION: Assign a legal value to DDIO_OUTPUT_REGISTER_DISTANCE setting in the Quartus Prime Settings File (.qsf). Legal values are 1 and 2.