from odoo import api, fields, models class AccountJournal(models.Model): _inherit = "account.journal" debit_sequence = fields.Boolean( string="Dedicated Debit Note Sequence", compute="_compute_debit_sequence", readonly=False, store=True, help="Check this box if you don't want to share the same sequence for invoices " "and debit notes made from this journal", ) @api.depends("type") def _compute_debit_sequence(self): for journal in self: journal.debit_sequence = journal.type in ("sale", "purchase")