in case the profile is a simplified profile. This is because this relation is
there because of the SEDA 2 underlying model, where all data objects are below
the transfer node, but it is not used in SEDA 0.2 and 1.0, where data
objects are dispatched under the archive units tree. So we don't want to prevent
having several data objects with cardinality != 1 at different level of the
tree.

Closes extranet #37372358