ID:24227 Partition "<partition_descendant>" ("<inst_name_descendant>") cannot use the PRESERVE assignment while the parent or ancestor partition "<partition_ancestor>" ("<inst_name_ancestor>") is marked EMPTY. To fix this error, remove the preservation setting on partition "<partition_descendant>" or remove the EMPTY assignment on the parent or ancestor partition "<partition_ancestor>".

CAUSE: A partition has a PRESERVE assignment, while its parent or ancestor partition has an EMPTY assignment.

ACTION: Remove either the PRESERVE assignment of the partition or the EMPTY assignment of the parent or ancestor partition in the Quartus Setting File.