# Update Metadata of Items in SharePoint

The connector's `update` fetch action updates the metadata of items in the SharePoint repository.

You can update the following metadata:

- The values of metadata fields for list items (including files in document libraries).
- The Access Control Lists (ACLs) for sites, lists, and list items.

To use the `update` action, you must construct some XML that specifies the identifiers of the items to update, and provides the new values for any metadata fields that you want to change.

You must add the XML to the action as the value of the `identifiersXML` action parameter. The XML must be URL-encoded before being used in the action command. For example:

    http://host:port/action=Fetch&FetchAction=update
                                 &IdentifiersXML=URL-encoded XML

For more information about how to construct the XML, see Construct XML to Update Metadata and Construct XML to Update Access Control Lists.

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