{
  "n_processed": 507,
  "n_failed": 48,
  "failures": [
    {
      "pdb_id": "2X6M",
      "reason": "chain_match_failed"
    },
    {
      "pdb_id": "5IVN",
      "reason": "chain_match_failed"
    },
    {
      "pdb_id": "6ZBP",
      "reason": "download_failed"
    },
    {
      "pdb_id": "6ZWK",
      "reason": "chain_match_failed"
    },
    {
      "pdb_id": "7NKT",
      "reason": "download_failed"
    },
    {
      "pdb_id": "7NMU",
      "reason": "download_failed"
    },
    {
      "pdb_id": "8DLX",
      "reason": "download_failed"
    },
    {
      "pdb_id": "8DLZ",
      "reason": "download_failed"
    },
    {
      "pdb_id": "8EMY",
      "reason": "download_failed"
    },
    {
      "pdb_id": "8EN1",
      "reason": "download_failed"
    },
    {
      "pdb_id": "8EN4",
      "reason": "download_failed"
    },
    {
      "pdb_id": "8EN5",
      "reason": "download_failed"
    },
    {
      "pdb_id": "8EN6",
      "reason": "download_failed"
    },
    {
      "pdb_id": "8FIF",
      "reason": "chain_match_failed"
    },
    {
      "pdb_id": "8JJV",
      "reason": "chain_match_failed"
    },
    {
      "pdb_id": "8XOF",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43909",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43920",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43921",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43922",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43923",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43924",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43933",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43935",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43936",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43940",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43941",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43942",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43943",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43945",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43946",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43947",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43951",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43952",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43955",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43956",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43958",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43961",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43963",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43967",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43969",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43970",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43971",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43974",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43975",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43976",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43977",
      "reason": "download_failed"
    },
    {
      "pdb_id": "ENTRY_43979",
      "reason": "download_failed"
    }
  ],
  "total_pdb_ids": 555,
  "known_limitations": [
    "Some RCSB entries are mmCIF-only and will show as download_failed",
    "Chain assignment is heuristic; multimeric antigens/symmetric complexes may misassign"
  ]
}