contract/contract_payment_auto/models/account_invoice.py

# Copyright 2017 LasLabs Inc.
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

from odoo import fields, models


class AccountInvoice(models.Model):
    _inherit = 'account.invoice'

    auto_pay_attempts = fields.Integer()
    auto_pay_failed = fields.Datetime()