Thanks it works

Hi,

Try this code:

date_deadline = fields.Date(string='Due Date', compute='_compute_due_date', store=True)

    @api.depends('proc_date')

    def _compute_due_date(self):

        for record in self:

            if record.proc_date:

                # Assuming you want to calculate the due date as 4 days from proc_date

                due_date = fields.Datetime.from_string(record.proc_date) + timedelta(days=4)

                record.date_deadline = due_date.date()

Hope it helps