diff --git a/addons/stock/i18n/stock.pot b/addons/stock/i18n/stock.pot
index d728eb27bed..799122c9d68 100644
--- a/addons/stock/i18n/stock.pot
+++ b/addons/stock/i18n/stock.pot
@@ -7651,13 +7651,6 @@ msgstr ""
 msgid "Sequence picking"
 msgstr ""
 
-#. module: stock
-#. odoo-python
-#: code:addons/stock/models/stock_picking.py:0
-#, python-format
-msgid "Sequences %s already exist."
-msgstr ""
-
 #. module: stock
 #: model:ir.model.fields,field_description:stock.field_stock_move__lot_ids
 msgid "Serial Numbers"
diff --git a/addons/stock/models/stock_picking.py b/addons/stock/models/stock_picking.py
index fad1004cf14..2e173d5634f 100644
--- a/addons/stock/models/stock_picking.py
+++ b/addons/stock/models/stock_picking.py
@@ -343,16 +343,6 @@ class PickingType(models.Model):
         for record in self:
             record.show_picking_type = record.code in ['incoming', 'outgoing', 'internal']
 
-    @api.constrains('sequence_id')
-    def _check_sequence_code(self):
-        domain = expression.OR([[('company_id', '=', record.company_id.id), ('name', '=', record.sequence_id.name)]
-                                for record in self])
-        duplicate_records = self.env['ir.sequence']._read_group(
-            domain, ['company_id', 'name'], having=[('__count', '>', 1)])
-        if duplicate_records:
-            duplicate_names = [name for __, name in duplicate_records]
-            raise UserError(_("Sequences %s already exist.",
-                            ', '.join(duplicate_names)))
 
 class Picking(models.Model):
     _name = "stock.picking"
diff --git a/addons/stock/tests/__init__.py b/addons/stock/tests/__init__.py
index 9cfe78269f6..ceed79b5c47 100644
--- a/addons/stock/tests/__init__.py
+++ b/addons/stock/tests/__init__.py
@@ -22,6 +22,5 @@ from . import test_report_stock_quantity
 from . import test_report_tours
 from . import test_stock_return_picking
 from . import test_stock_lot
-from . import test_picking
 from . import test_picking_tours
 from . import test_replenish
diff --git a/addons/stock/tests/test_picking.py b/addons/stock/tests/test_picking.py
deleted file mode 100644
index f581d767573..00000000000
--- a/addons/stock/tests/test_picking.py
+++ /dev/null
@@ -1,34 +0,0 @@
-from odoo.tests import common
-from odoo.exceptions import UserError
-
-class TestPicking(common.TransactionCase):
-
-    def test_00_no_duplicate_sequence_code(self):
-        stock_location = self.env.ref('stock.stock_location_stock')
-        operation_type_1 = self.env['stock.picking.type'].create({
-            'name':'test 1',
-            'code': 'internal',
-            'default_location_src_id':stock_location.id,
-            'default_location_dest_id':stock_location.id,
-            'sequence_code':'testpicking'
-        })
-        with self.assertRaises(UserError) as er:
-            self.env['stock.picking.type'].create({
-                'name':'test 2',
-                'code': 'internal',
-                'default_location_src_id':stock_location.id,
-                'default_location_dest_id':stock_location.id,
-                'sequence_code':'testpicking'
-            })
-        self.assertEqual(
-            er.exception.args[0], f'Sequences {operation_type_1.sequence_id.name} already exist.')
-
-    def test_empty_picking_draft(self):
-        """ test an empty still can be reset to draft """
-        picking = self.env['stock.picking'].create({
-            'picking_type_id': self.env.ref('stock.picking_type_in').id,
-            'location_id': self.env.ref('stock.stock_location_stock').id,
-            'location_dest_id': self.env.ref('stock.stock_location_stock').id,
-        })
-        self.assertFalse(picking.move_ids)
-        self.assertEqual(picking.state, 'draft')
diff --git a/addons/stock/tests/test_stock_flow.py b/addons/stock/tests/test_stock_flow.py
index a6eaff54b2e..303caae1760 100644
--- a/addons/stock/tests/test_stock_flow.py
+++ b/addons/stock/tests/test_stock_flow.py
@@ -2507,6 +2507,16 @@ class TestStockFlow(TestStockCommon):
         self.PickingObj.flush_model()
         self.assertEqual(self.PickingObj.search_count([('name', '=', picking_2.name)]), 1)
 
+    def test_empty_picking_draft(self):
+        """ test an empty still can be reset to draft """
+        picking = self.PickingObj.create({
+            'picking_type_id': self.picking_type_in,
+            'location_id': self.stock_location,
+            'location_dest_id': self.stock_location,
+        })
+        self.assertFalse(picking.move_ids)
+        self.assertEqual(picking.state, 'draft')
+
 
 @tagged('-at_install', 'post_install')
 class TestStockFlowPostInstall(TestStockCommon):