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Requirements for content in the feed are the same, regardless of the [Feed format](🔗).

The pre-defined RSS-elements allow only for limited details about a product or item.

To include more information about a product or item in your catalog, the RSS 2.0 format is extended by adding custom elements defined in the Optimizely Personalization (Recommendations) namespace. These elements are prefixed with `p:`.

**Element overview:**

  • [Mandatory channel elements](🔗)

  • [Mandatory item elements](🔗)

  • [Optional item elements](🔗)

See each topic for details. See [RSS 2.0 feed sample](🔗) for an example of a product feed.