diff --git a/commown_devices/models/stock_move_line.py b/commown_devices/models/stock_move_line.py
index daff0879..8b317d61 100644
--- a/commown_devices/models/stock_move_line.py
+++ b/commown_devices/models/stock_move_line.py
@@ -26,6 +26,23 @@ def _compute_show_validate_picking(self):
                 rec.move_id.picking_id and rec.move_id.picking_id.state == "assigned"
             )
 
+    def action_open_parent(self):
+        if self.move_id.scrap_ids:
+            res_model = "stock.scrap"
+            res_id = self.move_id.scrap_ids.id
+        else:
+            res_model = "stock.picking"
+            res_id = self.move_id.picking_id.id
+        return {
+            "name": "Source",
+            "type": "ir.actions.act_window",
+            "view_type": "form",
+            "view_mode": "form",
+            "res_model": res_model,
+            "res_id": res_id,
+            "target": "new",
+        }
+
     def action_validate_linked_picking(self):
         unvalidated_contract_ml = self.move_id.contract_id.move_line_ids.filtered(
             lambda ml: ml.state == "assigned"
diff --git a/commown_devices/tests/test_stock_move_line.py b/commown_devices/tests/test_stock_move_line.py
index f7b6b9c8..57941069 100644
--- a/commown_devices/tests/test_stock_move_line.py
+++ b/commown_devices/tests/test_stock_move_line.py
@@ -88,3 +88,45 @@ def test_action_validate_linked_picking(self):
         # When only obe unvalidated move, the picking is validated directly
         self.move_line2.action_validate_linked_picking()
         self.assertEqual(self.picking2.state, "done")
+
+    def test_action_open_parent(self):
+        # Check result on picking move line
+        expected_result = {
+            "name": "Source",
+            "type": "ir.actions.act_window",
+            "view_type": "form",
+            "view_mode": "form",
+            "res_model": "stock.picking",
+            "res_id": self.picking1.id,
+            "target": "new",
+        }
+        self.assertEqual(self.move_line1.action_open_parent(), expected_result)
+
+        # Create scrap
+        self.picking2.button_validate()
+        lot = self.move_line2.lot_id
+        scrap_loc = self.env.ref("stock.stock_location_scrapped")
+        scrap = self.env["stock.scrap"].create(
+            {
+                "product_id": lot.product_id.id,
+                "lot_id": lot.id,
+                "location_id": self.picking2.location_dest_id.id,
+                "scrap_location_id": scrap_loc.id,
+                "product_uom_id": lot.product_id.uom_id.id,
+                "date_expected": self.picking2.date_done,
+            }
+        )
+        scrap.action_validate()
+        scrap_move_line = scrap.move_id.move_line_ids
+
+        # Check result on a scrap
+        expected_result = {
+            "name": "Source",
+            "type": "ir.actions.act_window",
+            "view_type": "form",
+            "view_mode": "form",
+            "res_model": "stock.scrap",
+            "res_id": scrap.id,
+            "target": "new",
+        }
+        self.assertEqual(scrap_move_line.action_open_parent(), expected_result)
diff --git a/commown_devices/views/contract.xml b/commown_devices/views/contract.xml
index a6753739..9f038905 100644
--- a/commown_devices/views/contract.xml
+++ b/commown_devices/views/contract.xml
@@ -30,6 +30,7 @@
                   >
                 <field name="is_contract_in" invisible="1"/>
                 <field name="show_validate_picking" invisible="1"/>
+                <button string="Source" class="oe_highlight" type="object" name="action_open_parent"/>
                 <field name="product_id"/>
                 <field name="lot_id"/>
                 <field name="location_id"/>