Allow to get RFF|DQ but doesn't process it

shipment.py

@@ -100,7 +100,8 @@ class ShipmentIn(EdifactMixin, metaclass=PoolMeta):
         # means the file readed it's not a order response.
         if not message.get_segment('DESADV_D_96A_UN_EAN005'):
             return DO_NOTHING, NO_ERRORS
-        rff = message.get_segment('RFF')
+        rffs = message.get_segments('RFF')
+        rff, = [x for x in rffs if x.elements[0] == 'ON'] or [None]
         template_rff = template_header.get('RFF')
         purchase, errors = cls._process_RFF(rff, template_rff, control_chars)
         if errors:

templates/DESADV_ediversa.yml

@@ -5,7 +5,7 @@ header:
     DESADV_D_96A_UN_EAN005: []
     BGM: ['!value', '351', !!python/tuple ['9', '31']]
     DTM: ['!value']
-    RFF: ['ON', '!value']
+    RFF: [!!python/tuple ['ON', 'DQ'], '!value']
 detail:
     CPS: ['!value', !!python/tuple ['', '!value']]
     LIN: ['!value', 'EN', '!value']