diff --git a/addons/account_edi_ubl_cii/models/account_edi_xml_ubl_xrechnung.py b/addons/account_edi_ubl_cii/models/account_edi_xml_ubl_xrechnung.py
index 5010b9db338..87827d4d843 100644
--- a/addons/account_edi_ubl_cii/models/account_edi_xml_ubl_xrechnung.py
+++ b/addons/account_edi_ubl_cii/models/account_edi_xml_ubl_xrechnung.py
@@ -23,11 +23,7 @@ class AccountEdiXmlUBLDE(models.AbstractModel):
     def _export_invoice_vals(self, invoice):
         # EXTENDS account.edi.xml.ubl_bis3
         vals = super()._export_invoice_vals(invoice)
-
-        vals['vals'].update({
-            'customization_id': 'urn:cen.eu:en16931:2017#compliant#urn:xoev-de:kosit:standard:xrechnung_2.3#conformant#urn:xoev-de:kosit:extension:xrechnung_2.3',
-        })
-
+        vals['vals']['customization_id'] = 'urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0'
         return vals
 
     def _export_invoice_constraints(self, invoice, vals):
diff --git a/addons/l10n_account_edi_ubl_cii_tests/tests/test_files/from_odoo/xrechnung_ubl_out_invoice.xml b/addons/l10n_account_edi_ubl_cii_tests/tests/test_files/from_odoo/xrechnung_ubl_out_invoice.xml
index 370337a9a87..1fedebbafa9 100644
--- a/addons/l10n_account_edi_ubl_cii_tests/tests/test_files/from_odoo/xrechnung_ubl_out_invoice.xml
+++ b/addons/l10n_account_edi_ubl_cii_tests/tests/test_files/from_odoo/xrechnung_ubl_out_invoice.xml
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <Invoice xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2">
-  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xoev-de:kosit:standard:xrechnung_2.3#conformant#urn:xoev-de:kosit:extension:xrechnung_2.3</cbc:CustomizationID>
+  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
   <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
   <cbc:ID>INV/2017/01/0002</cbc:ID>
   <cbc:IssueDate>2017-01-01</cbc:IssueDate>
diff --git a/addons/l10n_account_edi_ubl_cii_tests/tests/test_files/from_odoo/xrechnung_ubl_out_refund.xml b/addons/l10n_account_edi_ubl_cii_tests/tests/test_files/from_odoo/xrechnung_ubl_out_refund.xml
index 73f1b05ed91..aee6bdf1c81 100644
--- a/addons/l10n_account_edi_ubl_cii_tests/tests/test_files/from_odoo/xrechnung_ubl_out_refund.xml
+++ b/addons/l10n_account_edi_ubl_cii_tests/tests/test_files/from_odoo/xrechnung_ubl_out_refund.xml
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <CreditNote xmlns="urn:oasis:names:specification:ubl:schema:xsd:CreditNote-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2">
-  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xoev-de:kosit:standard:xrechnung_2.3#conformant#urn:xoev-de:kosit:extension:xrechnung_2.3</cbc:CustomizationID>
+  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
   <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
   <cbc:ID>RINV/2017/01/0001</cbc:ID>
   <cbc:IssueDate>2017-01-01</cbc:IssueDate>
diff --git a/addons/l10n_account_edi_ubl_cii_tests/tests/test_xml_ubl_de.py b/addons/l10n_account_edi_ubl_cii_tests/tests/test_xml_ubl_de.py
index 05a7b60cec3..2baa5282e5b 100644
--- a/addons/l10n_account_edi_ubl_cii_tests/tests/test_xml_ubl_de.py
+++ b/addons/l10n_account_edi_ubl_cii_tests/tests/test_xml_ubl_de.py
@@ -233,7 +233,7 @@ class TestUBLDE(TestUBLCommon):
         self.assertEqual(xml_etree.find('{*}BuyerReference').text, partner.ref)
         self.assertEqual(
             xml_etree.find('{*}CustomizationID').text,
-            'urn:cen.eu:en16931:2017#compliant#urn:xoev-de:kosit:standard:xrechnung_2.3#conformant#urn:xoev-de:kosit:extension:xrechnung_2.3'
+            'urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0'
         )
 
         created_bill = self.env['account.move'].create({'move_type': 'in_invoice'})