from odoo import models class PosSession(models.Model): _inherit = 'pos.session' def _load_pos_data(self, models_to_load): data = super()._load_pos_data(models_to_load) tbai_refund_reason_field = self.env['ir.model.fields']._get('account.move', 'l10n_es_tbai_refund_reason') data['data'][0]['_tbai_refund_reasons'] = [ {'value': refund_reason.value, 'name': refund_reason.name} for refund_reason in tbai_refund_reason_field.selection_ids if refund_reason.value != 'R5' # R5 is for simplified invoice ] return data