diff --git a/lib/foodsoft_article_import.rb b/lib/foodsoft_article_import.rb
index 56f487b..e70748b 100644
--- a/lib/foodsoft_article_import.rb
+++ b/lib/foodsoft_article_import.rb
@@ -55,7 +55,7 @@ module FoodsoftArticleImport
     s = "#{article[:name]}-#{article[:unit_quantity]}x#{article[:unit]}"
     s = s.downcase.gsub(/[^a-z0-9.]/,'')
     # prefix abbreviated sha1-hash with colon to indicate that it's a generated number
-    article[:number] = ':' + Digest::SHA1.hexdigest(s)[-7..-1]
+    article[:order_number] = ':' + Digest::SHA1.hexdigest(s)[-7..-1]
     article
   end
   
diff --git a/lib/foodsoft_article_import/bioromeo.rb b/lib/foodsoft_article_import/bioromeo.rb
index 177539c..e32f34c 100644
--- a/lib/foodsoft_article_import/bioromeo.rb
+++ b/lib/foodsoft_article_import/bioromeo.rb
@@ -50,13 +50,13 @@ module FoodsoftArticleImport
         linenum += 1
         row[:name].blank? and next
         # (sub)categories are in first two content cells - assume if there's a price it's a product
-        if row[:number].blank? && row[:unit_price].blank?
+        if row[:order_number].blank? && row[:unit_price].blank?
           category = row[:name]
           yield nil, nil, linenum
           next
         end
         # skip products without a number
-        if row[:number].blank?
+        if row[:order_number].blank?
           yield nil, nil, linenum
           next
         end
@@ -65,7 +65,7 @@ module FoodsoftArticleImport
         notes = []
         unit_price = row[:unit_price]
         pack_price = row[:pack_price]
-        number = row[:number]
+        number = row[:order_number]
         name = row[:name]
         unit = nil
         manufacturer = nil
@@ -129,7 +129,7 @@ module FoodsoftArticleImport
         errors << check_price(unit, unit_quantity, unit_price, pack_price)
         # create new article
         name.gsub!(/\s+/, ' ')
-        article = {:number => number,
+        article = {:order_number => number,
                   :name => name.strip,
                   :note => notes.count > 0 && notes.map(&:strip).join("; "),
                   :manufacturer => manufacturer,
@@ -139,7 +139,7 @@ module FoodsoftArticleImport
                   :unit_quantity => unit_quantity,
                   :tax => 6,
                   :deposit => 0,
-                  :category => prod_category || category
+                  :article_category => prod_category || category
                   }
         errors.compact!
         if errors.count > 0
diff --git a/lib/foodsoft_article_import/bnn.rb b/lib/foodsoft_article_import/bnn.rb
index 8c45c45..fbf2ed4 100644
--- a/lib/foodsoft_article_import/bnn.rb
+++ b/lib/foodsoft_article_import/bnn.rb
@@ -61,11 +61,11 @@ module FoodsoftArticleImport
         unless row[0] == "" || row[0].nil?
           article = {
               :name => row[6],
-              :number => row[0],
+              :order_number => row[0],
               :note => row[7],
               :manufacturer => self.translate(:manufacturer, row[10]),
               :origin => row[12],
-              :category => self.translate(:category, row[16]),
+              :article_category => self.translate(:category, row[16]),
               :unit => row[23],
               :price => row[37],
               :tax => self.translate(:tax, row[33]),
diff --git a/lib/foodsoft_article_import/borkenstein.rb b/lib/foodsoft_article_import/borkenstein.rb
index 837c700..72be944 100644
--- a/lib/foodsoft_article_import/borkenstein.rb
+++ b/lib/foodsoft_article_import/borkenstein.rb
@@ -70,7 +70,7 @@ module FoodsoftArticleImport
             end
 
             article = {
-              :number => row[1],
+              :order_number => row[1],
               :name => name,
               :origin => origin,
               :manufacturer => manufacturer,
diff --git a/lib/foodsoft_article_import/dnb_xml.rb b/lib/foodsoft_article_import/dnb_xml.rb
index 76ea1c0..4f7ac3d 100644
--- a/lib/foodsoft_article_import/dnb_xml.rb
+++ b/lib/foodsoft_article_import/dnb_xml.rb
@@ -39,7 +39,7 @@ module FoodsoftArticleImport
           @@codes[:indeling][row.search('subindeling').text.to_i]
         ].compact.join(' - ')
 
-        article = {:number => row.search('bestelnummer').text,
+        article = {:order_number => row.search('bestelnummer').text,
                   #:ean => row.search('eancode').text,
                   :name => row.search('omschrijving').text,
                   :note => row.search('kwaliteit').text,
@@ -50,7 +50,7 @@ module FoodsoftArticleImport
                   :unit_quantity => row.search('sve').text,
                   :tax => row.search('btw').text,
                   :deposit => deposit,
-                  :category => category}
+                  :article_category => category}
 
         yield article, (row.search('status') == 'Actief' ? :outlisted : nil), i
       end
diff --git a/lib/foodsoft_article_import/foodsoft.rb b/lib/foodsoft_article_import/foodsoft.rb
index f40f9be..6916a16 100644
--- a/lib/foodsoft_article_import/foodsoft.rb
+++ b/lib/foodsoft_article_import/foodsoft.rb
@@ -34,7 +34,7 @@ module FoodsoftArticleImport::Foodsoft
         next
       end
 
-      article = {:number => row[1],
+      article = {:order_number => row[1],
                  :name => row[2],
                  :note => row[3],
                  :manufacturer => row[4],
@@ -45,9 +45,9 @@ module FoodsoftArticleImport::Foodsoft
                  :unit_quantity => row[10],
                  :scale_quantity => row[11],
                  :scale_price => row[12],
-                 :category => row[13]}
+                 :article_category => row[13]}
       article.merge!(:deposit => row[9]) unless row[9].nil?
-      article[:number].blank? and ArticleImport.generate_number(article)
+      article[:order_number].blank? and ArticleImport.generate_number(article)
       if row[6].nil? || row[7].nil? or row[8].nil?
         yield article, "Error: unit, price and tax must be entered", i
       else