I have the following inputdata in my skin

<link-themes>
   <themes templates="index,page" configurable="true">
        <theme id="OUTILS"/>
    </themes>
</link-themes>

but the theme OUTILS only exists in french.

In BO the input data display an error in a english page (see.screenshot):

OUTILS deleted theme(s) still referenced by this service. Reconfigure the application to get rid of this error.

First of all, the error message should be

OUTILS deleted theme(s) still referenced by this service input data. Reconfigure the application to get rid of this error.

Then in preview, the input data display an empty zone (see screenshot). If the input data contains only wrong themes, the zone should not be visible.

<linkDirectory applicable="true" configurable="true">
      <links>
            <wrong-themes>
                    <wrong-theme>OUTILS</wrong-theme>
            </wrong-themes>
      </links>
</linkDirectory>

Finally, the input data file should handle theme langue.
For example

<themes templates="index,page" configurable="true">
        <theme id="OUTILS" lang="fr"/>
        <theme id="TOOLS" lang="en"/>
</themes>