[FIX] stock: avoid a warning in internal transfer with tracked product

Steps to reproduce the bug:
- Create a storable product “P1”:
    - Tracked by “SN”
    - Update the qty to 1 in “WH/stock” with “SN1”

- Create an internal transfer:
    - Location: wh/Stock
    - Dest location: wh2/stock

- Mark as todo
- Try to select SN1 in the `stock.move`

Problem:
A warning is triggered:
`Existing Serial numbers. Please correct the serial numbers encoded:
(001) exists in location WH/Stock`

We do a search to find all the quants in every location to verify if
the same serial number is not being used, but we do not exclude the
source location.

opw-3734300

closes odoo/odoo#155651

X-original-commit: c6e5b2b4c98f702f9108e75bdc669397ae5e0081
Signed-off-by: Arnold Moyaux (arm) <arm@odoo.com>
Signed-off-by: Djamel Touati (otd) <otd@odoo.com>

addons/stock/models/stock_move.py

@@ -1128,6 +1128,7 @@ Please change the quantity done or the rounding precision of your unit of measur
         quants = self.env['stock.quant'].search([('product_id', '=', self.product_id.id),
                                                  ('lot_id', 'in', self.lot_ids.ids),
                                                  ('quantity', '!=', 0),
+                                                 ('location_id', '!=', self.location_id.id),# Exclude the source location
                                                  '|', ('location_id.usage', '=', 'customer'),
                                                       '&', ('company_id', '=', self.company_id.id),
                                                            ('location_id.usage', 'in', ('internal', 'transit'))])

addons/stock/tests/test_move.py

@@ -6265,3 +6265,27 @@ class StockMove(TransactionCase):
 
         self.assertEqual(picking.scheduled_date, today + relativedelta(day=5))
         self.assertEqual(backorder.scheduled_date, today + relativedelta(day=10))
+
+    def test_internal_transfer_with_tracked_product(self):
+        """
+        Test That we can do an internal transfer with a tracked products
+        """
+        sn01 = self.env['stock.lot'].create({
+            'name': 'sn_1',
+            'product_id': self.product_serial.id,
+        })
+        self.env['stock.quant']._update_available_quantity(self.product_serial, self.stock_location, 1.0, lot_id=sn01)
+        with Form(self.env['stock.picking']) as picking_form:
+            picking_form.picking_type_id = self.env.ref('stock.picking_type_internal')
+            with picking_form.move_ids_without_package.new() as move:
+                move.product_id = self.product_serial
+                move.product_uom_qty = 1
+            picking = picking_form.save()
+
+        picking.action_confirm()
+        self.assertEqual(picking.state, 'assigned')
+
+        with picking_form.move_ids_without_package.edit(0) as line_form:
+            line_form.lot_ids.add(sn01)
+        picking = picking_form.save()
+        self.assertEqual(picking.move_ids_without_package.lot_ids, sn01)