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Editorial Team
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Asked: 2026-06-03T07:37:53+00:00

I have a List defined in a SharePoint Site e.g. Countries list. In another

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I have a List defined in a SharePoint Site e.g. Countries list.

In another site, I have a List that needs to have a column with multilookup to the above Countries list. (So these 2 sites are separate sites)

How would that be possible to configure this in SharePoint 2010?

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1 Answer

  1. Editorial Team

    That is possible but requires some programming or scripting, because cross site lookup field can’t be configured using web UI.
    PowerShell code should be following:

    $web1 = Get-SPWeb “http://site/web1”
    $web2 = Get-SPWeb
    “http://site/web2”
    $list = $web1.Lists[“My list”]
    $lookupList = $web2.Lists[“My lookup list”]
    $list.Fields.AddLookup(“MyCrosssiteLookup”, $lookupList.ID, $web2.ID,
    $false)
    $lookupField =
    list.Fields.GetFieldByInternalName(InternalName)
    $lookupField.Title = “My cross site lookup”
    $lookupField.Update()

    Alternatively you can use LookupWithPicker field type, it has web UI control to configure cross-site lookpups: http://ilovesharepoint.codeplex.com/releases/view/44989.

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