results from the aggregation of previously reported SA or LSA complex operation involving both the splitting and aggregation of previously reported SA or LSA the identifiers used at national level have changed (the real-world entities have not changed) results from the change of the geometry of a previously reported SA or LSA a SA or LSA that no longer exists and has no successor (in this case put also 'Deletion' in the rcaCode cell) other reason results from the splitting of a previously reported SA or LSA