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# <autn:categories> (required)

The `<autn:categories>` tag marks the beginning of the XML categories that IDOL Server reads. When you use the `CategoryImportFromXML` action, 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 IDOL to XML. You can then import the XML to 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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