whatsapp_web_groups/custom_sat_connection/models/account_cfdi_tax.py

from odoo import api, fields, models

class AccountCfdiTax(models.Model):
    _name = 'account.cfdi.tax'
    _description = 'Impuestos de conceptos de CFDI'

    sequence = fields.Integer(string='Secuencia', required=True)
    company_id = fields.Many2one(comodel_name='res.company', string='Empresa', related='concept_id.company_id', store=True)
    base = fields.Float(string='Base')
    code = fields.Char(string='Código')
    factor_type = fields.Char(string='Código de porcentaje')
    rate = fields.Float(string='Tasa o cuota', digits=(6, 4))
    amount = fields.Float(string='Importe')
    tax_id = fields.Many2one(comodel_name='account.tax', string='Impuesto')
    concept_id = fields.Many2one(comodel_name='account.cfdi.line', string='Concepto de CFDI', ondelete="cascade")
    cfdi_id = fields.Many2one(comodel_name='account.cfdi', string='CFDI', related="concept_id.cfdi_id", store=True, ondelete="cascade")
    tax_type = fields.Selection(string="Tipo de impuesto", selection=[('retencion', 'Retención'), ('traslado', 'Traslados')])