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diff --git a/addons/l10n_in_sale/models/res_partner.py b/addons/l10n_in_sale/models/res_partner.py
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+++ b/addons/l10n_in_sale/models/res_partner.py
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+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, fields, models, _
+from odoo.exceptions import ValidationError
+
+
+class ResPartner(models.Model):
+    _inherit = 'res.partner'
+
+    l10n_in_shipping_gstin = fields.Char("Shipping GSTIN")
+
+    @api.constrains('l10n_in_shipping_gstin')
+    def _check_l10n_in_shipping_gstin(self):
+        check_vat_in = self.env['res.partner'].check_vat_in
+        wrong_shipping_gstin_partner = self.filtered(lambda p: p.l10n_in_shipping_gstin and not check_vat_in(p.l10n_in_shipping_gstin))
+        if wrong_shipping_gstin_partner:
+            raise ValidationError(_("The shipping GSTIN number [%s] does not seem to be valid") %(",".join(p.l10n_in_shipping_gstin for p in wrong_shipping_gstin_partner)))