UpdatePurchaseOrderAttributes

mutation UpdatePurchaseOrderAttributes($input: [UpdatePurchaseOrderAttributeInput]!) {
  UpdatePurchaseOrderAttributes(input: $input) {
    purchaseOrderAttributes {
      Created
      Etag
      LastSessionId
      Updated
      _IonValueCount
      _ValueCount
    }
  }
}

{
  "input": [
    {
      "etag": "string",
      "key": "string",
      "purchaseOrderId": 1
    }
  ]
}

{
  "data": {
    "UpdatePurchaseOrderAttributes": {
      "purchaseOrderAttributes": [
        {
          "Created": "value",
          "Etag": "string",
          "LastSessionId": "string",
          "Updated": "value",
          "_IonValueCount": 1,
          "_ValueCount": 1
        }
      ]
    }
  }
}