The field lot_name is not initialised in many cases.
Steps to reproduce the bug:
- Set your user in the group called "Display Serial & Lot Number in Delivery Slips"
- Create a new stockable product P with setting tracking "by unique serial number"
- Create 10 serial numbers for P
- Purchase 10 units of P and select the 10 serial numbers created
- Create a SO where I selected 1 unit of P with its serial number and confirm it
- Go to the delivery slip and print the delivery slip
Bug:
The serial number was not printed in the delivery slip.
opw:1900735
closesodoo/odoo#28076