[FIX] Simple VAT check after VIES check fails

base_vat_optional_vies/models/res_partner.py

@@ -1,6 +1,7 @@
 # Copyright 2015 Tecnativa - Antonio Espinosa
 # Copyright 2017 Tecnativa - David Vidal
 # Copyright 2019 FactorLibre - Rodrigo Bonilla
+# Copyright 2022 Moduon - Eduardo de Miguel
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
 from odoo import api, fields, models
 
@@ -29,6 +30,8 @@ class ResPartner(models.Model):
             # call simple_vat_check and thus the flag will be removed
             partner.update({"vies_passed": True})
         res = super(ResPartner, self).vies_vat_check(country_code, vat_number)
+        if not res:
+            return self.simple_vat_check(country_code, vat_number)
         return res
 
     @api.constrains("vat", "country_id")