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# <autn:categories> (required)

The `<autn:categories>` tag marks the beginning of the XML categories that HPE IDOL Server reads. When you use the `CategoryImportFromXML` action, HPE IDOL Server reads the XML between the opening and closing `<autn:categories>` tags.

All categories (`<autn:category>`) are children of (`<autn:categories>`) when you export a category from HPE IDOL to XML. You can then import the XML to HPE IDOL. They should have the same format.

You must include an XML namespace in the tag. For example:

    <autn:categories xmlns:autn="http://schemas.autonomy.com/aci">

Tag name | Number allowed | Required
--- | --- | ---
<autn:category> | one or more | No

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