diff --git a/product/ERP5/Document/BusinessPath.py b/product/ERP5/Document/BusinessPath.py
index 43b8f6cc0d67b1761a9a86d8d13b1c0792febcea..f664c093560880b0fb1761ed277ae5110bf5dd01 100644
--- a/product/ERP5/Document/BusinessPath.py
+++ b/product/ERP5/Document/BusinessPath.py
@@ -144,7 +144,18 @@ class BusinessPath(Path):
       XXX - implementation missing
       TBD - look at CategoryTool._buildFilter for inspiration
     """
-    return category_list
+    filtered_category_list = []
+    for cat in category_list:
+      # basic filtering, dirty way:
+      #  - remove categories, which are not defined in category parameter
+      #  - support base parameter
+      base_cat, base_value = cat.split('/')[0] , '/'.join(cat.split('/')[1:])
+      if base_cat == category:
+        value = base_value
+        if base == 1:
+          value = '/'.join([base_cat, value])
+        filtered_category_list.append(value)
+    return filtered_category_list
 
   # Dynamic context based categories
   def _getDynamicCategoryList(self, context):