<af:selectOneChoice label="#{bindings.InvView1.label}" id="soc1"
binding="#{backingBeanScope.backing_inv.soc1}"
value="#{bindings.InvView1.inputValue}"
required="#{bindings.InvView1.hints.mandatory}">

<f:selectItems value="#{bindings.InvView1.items}" id="si2"
binding="#{backingBeanScope.backing_inv.si2}" />

</af:selectOneChoice>
</af:selectOneChoice>