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        "source_key": "vrbg",
        "training_allowed": false
      },
      {
        "authority_name": "Waterinfo Vlaanderen",
        "authority_scope": {
          "theme": "water",
          "zone": "Flanders"
        },
        "classification": "authoritative",
        "default_crs": "EPSG:31370",
        "default_units": "source_specific",
        "freshness_status": "unknown",
        "ground_truth_allowed": false,
        "ingest_status": "registered",
        "provider_adapter_key": null,
        "source_key": "waterinfo",
        "training_allowed": false
      }
    ],
    "required_building_policy": {
      "buildings_register_classification": "authoritative",
      "dhmv_classification": "authoritative",
      "grb_primary_building_validation": "primary",
      "osm_ground_truth_allowed": false,
      "sentinel_2_classification": "contextual"
    }
  }
}