diff --git a/product/ERP5/bootstrap/erp5_core/CategoryTemplateItem/portal_categories/constraint_type.xml b/product/ERP5/bootstrap/erp5_core/CategoryTemplateItem/portal_categories/constraint_type.xml
new file mode 100644
index 0000000000000000000000000000000000000000..7a3ca86ce01e95d59a2841aa67f7fd146a5034a4
--- /dev/null
+++ b/product/ERP5/bootstrap/erp5_core/CategoryTemplateItem/portal_categories/constraint_type.xml
@@ -0,0 +1,123 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Base Category" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_Add_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Add_portal_folders_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Copy_or_Move_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Delete_objects_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Modify_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignee</string>
+                <string>Assignor</string>
+                <string>Manager</string>
+                <string>Owner</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_count</string> </key>
+            <value>
+              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+            </value>
+        </item>
+        <item>
+            <key> <string>_mt_index</string> </key>
+            <value>
+              <persistent> <string encoding="base64">AAAAAAAAAAM=</string> </persistent>
+            </value>
+        </item>
+        <item>
+            <key> <string>_tree</string> </key>
+            <value>
+              <persistent> <string encoding="base64">AAAAAAAAAAQ=</string> </persistent>
+            </value>
+        </item>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>constraint_type</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value> <string>This category represents the steps of one upgrade.</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>constraint_type</string> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Base Category</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Constraint Type</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="Length" module="BTrees.Length"/>
+    </pickle>
+    <pickle> <int>0</int> </pickle>
+  </record>
+  <record id="3" aka="AAAAAAAAAAM=">
+    <pickle>
+      <global name="OOBTree" module="BTrees.OOBTree"/>
+    </pickle>
+    <pickle>
+      <none/>
+    </pickle>
+  </record>
+  <record id="4" aka="AAAAAAAAAAQ=">
+    <pickle>
+      <global name="OOBTree" module="BTrees.OOBTree"/>
+    </pickle>
+    <pickle>
+      <none/>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/audit.xml b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/audit.xml
new file mode 100644
index 0000000000000000000000000000000000000000..638bbb7b0fd3bcafa3394a2f0f12a86aad564e76
--- /dev/null
+++ b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/audit.xml
@@ -0,0 +1,90 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Category" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_Add_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Add_portal_folders_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Copy_or_Move_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Delete_objects_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Modify_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignee</string>
+                <string>Assignor</string>
+                <string>Manager</string>
+                <string>Owner</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>constraint_type/pre_upgrade</string>
+                <string>constraint_type/default</string>
+                <string>constraint_type/default</string>
+                <string>constraint_type/audit</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value> <string>Started for general database audit (costly, done not too often to detect big global inconsistencies)</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>audit</string> </value>
+        </item>
+        <item>
+            <key> <string>int_index</string> </key>
+            <value> <int>0</int> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Category</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Audit</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/configuration.xml b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/configuration.xml
new file mode 100644
index 0000000000000000000000000000000000000000..cac30ec85666247ff1ac877b0b002b13b8440ea5
--- /dev/null
+++ b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/configuration.xml
@@ -0,0 +1,93 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Category" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_Add_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Add_portal_folders_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Copy_or_Move_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Delete_objects_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Modify_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignee</string>
+                <string>Assignor</string>
+                <string>Manager</string>
+                <string>Owner</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>constraint_type/pre_upgrade</string>
+                <string>constraint_type/default</string>
+                <string>constraint_type/default</string>
+                <string>constraint_type/configuration</string>
+                <string>constraint_type/configuration</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>configuration</string> </value>
+        </item>
+        <item>
+            <key> <string>int_index</string> </key>
+            <value> <int>3</int> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Category</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Configuration</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/default.xml b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/default.xml
new file mode 100644
index 0000000000000000000000000000000000000000..8955736f6cf5355e06ec2628cb2978b45c79afda
--- /dev/null
+++ b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/default.xml
@@ -0,0 +1,91 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Category" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_Add_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Add_portal_folders_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Copy_or_Move_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Delete_objects_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Modify_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignee</string>
+                <string>Assignor</string>
+                <string>Manager</string>
+                <string>Owner</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>constraint_type/pre_upgrade</string>
+                <string>constraint_type/default</string>
+                <string>constraint_type/default</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>default</string> </value>
+        </item>
+        <item>
+            <key> <string>int_index</string> </key>
+            <value> <int>0</int> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Category</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Default</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/post_upgrade.xml b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/post_upgrade.xml
new file mode 100644
index 0000000000000000000000000000000000000000..d9d9eea329a23d7b7bbf10433b009dc393b5ba45
--- /dev/null
+++ b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/post_upgrade.xml
@@ -0,0 +1,90 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Category" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_Add_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Add_portal_folders_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Copy_or_Move_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Delete_objects_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Modify_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignee</string>
+                <string>Assignor</string>
+                <string>Manager</string>
+                <string>Owner</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>constraint_type/pre_upgrade</string>
+                <string>constraint_type/post_upgrade</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>post_upgrade</string> </value>
+        </item>
+        <item>
+            <key> <string>int_index</string> </key>
+            <value> <int>2</int> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Category</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Post-Upgrade</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/pre_upgrade.xml b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/pre_upgrade.xml
new file mode 100644
index 0000000000000000000000000000000000000000..6c5fa9fe0de594ab58a2b0a8228d128ecbc1ae00
--- /dev/null
+++ b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/pre_upgrade.xml
@@ -0,0 +1,89 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Category" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_Add_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Add_portal_folders_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Copy_or_Move_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Delete_objects_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Modify_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignee</string>
+                <string>Assignor</string>
+                <string>Manager</string>
+                <string>Owner</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>constraint_type/pre_upgrade</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>pre_upgrade</string> </value>
+        </item>
+        <item>
+            <key> <string>int_index</string> </key>
+            <value> <int>0</int> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Category</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Pre-Upgrade</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/upgrader.xml b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/upgrader.xml
new file mode 100644
index 0000000000000000000000000000000000000000..16f77b3e6c33d62dc02fc7db2df86b9dab1dd067
--- /dev/null
+++ b/product/ERP5/bootstrap/erp5_core/PathTemplateItem/portal_categories/constraint_type/upgrader.xml
@@ -0,0 +1,93 @@
+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Category" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_Add_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Add_portal_folders_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Copy_or_Move_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Delete_objects_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignor</string>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>_Modify_portal_content_Permission</string> </key>
+            <value>
+              <tuple>
+                <string>Assignee</string>
+                <string>Assignor</string>
+                <string>Manager</string>
+                <string>Owner</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>constraint_type/pre_upgrade</string>
+                <string>constraint_type/default</string>
+                <string>constraint_type/default</string>
+                <string>constraint_type/upgrader</string>
+                <string>constraint_type/upgrader</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>upgrader</string> </value>
+        </item>
+        <item>
+            <key> <string>int_index</string> </key>
+            <value> <int>1</int> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Category</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Upgrade</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>
diff --git a/product/ERP5/bootstrap/erp5_core/bt/template_base_category_list b/product/ERP5/bootstrap/erp5_core/bt/template_base_category_list
index 6658b4477f1d4187960a0131f1b5dca20983f234..fc6056540255e3fdcd08bba9e8c4e85a4c9bbe50 100644
--- a/product/ERP5/bootstrap/erp5_core/bt/template_base_category_list
+++ b/product/ERP5/bootstrap/erp5_core/bt/template_base_category_list
@@ -4,6 +4,7 @@ aggregate
 business_application
 callable_type
 causality
+constraint_type
 delivery
 destination
 destination_account
diff --git a/product/ERP5/bootstrap/erp5_core/bt/template_path_list b/product/ERP5/bootstrap/erp5_core/bt/template_path_list
index eea760638954c72456d509ad2472b1fbaa605463..d8c742bb239c62fba58aef6ab1dac6c97eb24ed6 100644
--- a/product/ERP5/bootstrap/erp5_core/bt/template_path_list
+++ b/product/ERP5/bootstrap/erp5_core/bt/template_path_list
@@ -15,6 +15,11 @@ portal_caches/erp5_ui_short
 portal_caches/erp5_ui_short/default_ram_cache
 portal_categories/action_type/*
 portal_categories/callable_type/**
+portal_categories/constraint_type/audit
+portal_categories/constraint_type/configuration
+portal_categories/constraint_type/default
+portal_categories/constraint_type/post_upgrade
+portal_categories/constraint_type/pre_upgrade
 portal_categories/elementary_type/**
 portal_contribution_registry/default_predicate
 portal_contribution_registry/image_extension