diff -r e5ba1336f9da src-db/database/model/functions/OBAWO_GETJSONDESCRIPTION.xml
--- a/src-db/database/model/functions/OBAWO_GETJSONDESCRIPTION.xml  Mon May 21 09:42:05 2018 +0200
+++ b/src-db/database/model/functions/OBAWO_GETJSONDESCRIPTION.xml  Mon May 21 13:29:59 2018 +0200
@@ -38,6 +38,8 @@
   v_guaranteedate_label VARCHAR(2000);
   v_lot_label VARCHAR(2000);
   v_language_code VARCHAR(6);
+  v_att_set_instance_id_to_use VARCHAR(32);
+  v_ref_inv_id VARCHAR(32);
   TYPE RECORD IS REF CURSOR;
   Cur_Attribute RECORD;

@@ -60,11 +62,20 @@
   v_json:=v_json || '"serialno":{"value":"' || v_serno || '","name":"serialno","label":"' || v_serno_label || '"},';
   v_json:=v_json || '"guaranteedate":{"value":"' || v_guaranteedate || '","name":"guaranteedate","label":"' || v_guaranteedate_label || '"}';

+  SELECT m_refinventory_id, parent_attributesetinstance_id
+  INTO v_ref_inv_id, v_att_set_instance_id_to_use
+  FROM m_attributesetinstance_id
+  WHERE m_attributesetinstance_id = p_attributesetinstance_id;
+
+  IF (m_refinventory_id IS NULL) THEN
+    v_att_set_instance_id_to_use = p_attributesetinstance_id;
+  END IF;
+
   FOR Cur_Attribute IN
     (SELECT mai.m_attribute_id as attributeId, coalesce(to_char(mai.value), '') as attributeValue, ma.name as attributeName
      FROM m_attributeinstance mai
      INNER JOIN m_attribute ma on (ma.m_attribute_id=mai.m_attribute_id)
-     WHERE mai.m_attributesetinstance_id = p_attributesetinstance_id
+     WHERE mai.m_attributesetinstance_id = v_att_set_instance_id_to_use
      ORDER BY ma.name)
   LOOP
     v_json:=v_json || ',"' || Cur_Attribute.attributeId || '":{"value":"' || Cur_Attribute.attributeValue || '","name":"' || Cur_Attribute.attributeName || '"}';