{
  "fields": [
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      "field": "QRD.1",
      "minOccurs": "1",
      "maxOccurs": "1"
    },
    {
      "field": "QRD.2",
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    },
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    },
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    },
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    },
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    },
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    },
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      "maxOccurs": "unbounded"
    },
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      "maxOccurs": "unbounded"
    },
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    },
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      "field": "QRD.12",
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    }
  ]
}