<f:if condition="{settings.useOwnAddressNo}">
  <f:then>
    {invoice.debitor.meAddressid}
  </f:then>
  <f:else>
    <f:if condition="{invoice.debitor.number}">
      <f:then>{invoice.debitor.number}</f:then>
      <f:else>{invoice.entryUid}</f:else>
    </f:if>
  </f:else>
</f:if>