{
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    {
      "field": "ODT.1",
      "minOccurs": "1",
      "maxOccurs": "1"
    },
    {
      "field": "ODT.2",
      "minOccurs": "0",
      "maxOccurs": "unbounded"
    },
    {
      "field": "ODT.3",
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    }
  ]
}