This optional field is used to define the URL for the site (or the top-level site) you want to access and from which you want to return list items. This can be any SharePoint site that resides on the same server as this web part. If this field is left blank, it will default to the URL where the SharePoint Data Provider web part is placed.
The format for the URL is http://Site-URL/SiteName.
Examples:
•http://www.sitename.com/
•http://www.sitename.com/site1
•http://www.sitename.com/site1/site1a
To include lists from more than one site, type the first URL you want to work with in the Site URL field and then click Add URL. The URL you just identified is placed in the box below the field. Type another URL in the Site URL field and click Add URL again. Repeat this process as many times as necessary.
To remove selected URLs from this area, highlight the URL you want to remove from the box below this field and click Remove. Alternatively, you can click Remove All to remove all URLs.
TIP: If you configure a SharePoint Data Provider as Line of Site and a user does not have rights to access a particular site, that site and any sites under that site will not be included in the SharePoint Data Provider. This is true even if the user does have rights to a site that’s below the site to which they do not have access. If you want the SharePoint Data Provider to include the site to which the user does have rights, you can take advantage of the ability to identify multiple URLs in the Site URL field and include the URL of the site to which they do have access.