diff --git a/bt5/erp5_open_trade/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml b/bt5/erp5_open_trade/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml
index cdbb015e5f8fb1ec375b217e4793c98702e92263..5a07df50c935f329b01d9cfb3f1f1fb60d22e710 100644
--- a/bt5/erp5_open_trade/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml
+++ b/bt5/erp5_open_trade/PortalTypeWorkflowChainTemplateItem/workflow_chain_type.xml
@@ -3,6 +3,10 @@
   <type>Open Order Rule</type>
   <workflow>rule_validation_workflow</workflow>
  </chain>
+ <chain>
+  <type>Open Purchase Order</type>
+  <workflow>edit_workflow, open_order_workflow</workflow>
+ </chain>
  <chain>
   <type>Open Purchase Order Line</type>
   <workflow>delivery_movement_causality_interaction_workflow, delivery_movement_simulation_interaction_workflow, edit_workflow, pricing_interaction_workflow, trade_matrix_workflow</workflow>
diff --git a/bt5/erp5_open_trade/bt/revision b/bt5/erp5_open_trade/bt/revision
index b39356075901abfb43d27aef2ae5b76b6aee19c4..cabf43b5ddf813cbe89697372a21373f14921884 100644
--- a/bt5/erp5_open_trade/bt/revision
+++ b/bt5/erp5_open_trade/bt/revision
@@ -1 +1 @@
-23
\ No newline at end of file
+24
\ No newline at end of file
diff --git a/bt5/erp5_open_trade/bt/template_portal_type_workflow_chain_list b/bt5/erp5_open_trade/bt/template_portal_type_workflow_chain_list
index 22953755ac6bb0815ffc943b861397538ec26d52..64e7b577f29f8e848247e3ee90a786990286c67f 100644
--- a/bt5/erp5_open_trade/bt/template_portal_type_workflow_chain_list
+++ b/bt5/erp5_open_trade/bt/template_portal_type_workflow_chain_list
@@ -4,6 +4,8 @@ Open Purchase Order Line | delivery_movement_simulation_interaction_workflow
 Open Purchase Order Line | edit_workflow
 Open Purchase Order Line | pricing_interaction_workflow
 Open Purchase Order Line | trade_matrix_workflow
+Open Purchase Order | edit_workflow
+Open Purchase Order | open_order_workflow
 Open Sale Order Line | delivery_movement_causality_interaction_workflow
 Open Sale Order Line | delivery_movement_simulation_interaction_workflow
 Open Sale Order Line | edit_workflow