Message in French (Français)
Impossible d’ajouter le type « <var>Type Name</var> » à la liste des types connus puisqu’un autre type « <var>X</var> » avec le même nom de contrat de données « <var>Y</var>:X » est déjà présent.
Unlocalized message
Type '<var>Type Name</var>' cannot be added to list of known types since another type '<var>X</var>' with the same data contract name '<var>Y</var>:X' is already present. If there are different collections of a particular type - for example, List<test> and Test[], they cannot both be added as known types. Consider specifying only one of these types for addition to the known types list.</test>
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