Aggregation-Import must ensure creation of a root-edition or collection [was #12181]
If importing using the aggregation_import policy, it must be ensured that a root edition or colection ia (a) existing or (b) must be forced by the import module!
If importing using the aggregation_import policy, it must be ensured that a root edition or colection ia (a) existing or (b) must be forced by the import module!