[
  {"unknown_type": "schema_mismatch", "count": 3},
  {"unknown_type": "artefakt_fehlt", "count": 2},
  {"unknown_type": "unbekannter_parameter", "count": 1},
  {"unknown_type": "datenformat_unerwartet", "count": 4},
  {"unknown_type": "metadaten_unvollstaendig", "count": 1}
]