purchase_order => 'lieferantenbestellungen',
sales_delivery_order => 'verkaufslieferscheine',
purchase_delivery_order => 'einkaufslieferscheine',
+ supplier_delivery_order => 'beistelllieferscheine',
+ rma_delivery_order => 'retourenlieferscheine',
credit_note => 'gutschriften',
invoice => 'rechnungen',
invoice_for_advance_payment => 'rechnungen',