diff --git a/addons/account_edi_ubl_cii/models/account_edi_xml_ubl_20.py b/addons/account_edi_ubl_cii/models/account_edi_xml_ubl_20.py
index 686704fd370..3bb75c72ff5 100644
--- a/addons/account_edi_ubl_cii/models/account_edi_xml_ubl_20.py
+++ b/addons/account_edi_ubl_cii/models/account_edi_xml_ubl_20.py
@@ -67,11 +67,10 @@ class AccountEdiXmlUBL20(models.AbstractModel):
         }]
 
     def _get_partner_contact_vals(self, partner):
-        phone = partner.phone or partner.mobile
         return {
             'id': partner.id,
             'name': partner.name,
-            'telephone': phone and phone.strip(),
+            'telephone': partner.phone or partner.mobile,
             'electronic_mail': partner.email,
         }
 
diff --git a/addons/l10n_sa_edi/models/account_edi_xml_ubl_21_zatca.py b/addons/l10n_sa_edi/models/account_edi_xml_ubl_21_zatca.py
index 84c8b4c85af..e6482eef052 100644
--- a/addons/l10n_sa_edi/models/account_edi_xml_ubl_21_zatca.py
+++ b/addons/l10n_sa_edi/models/account_edi_xml_ubl_21_zatca.py
@@ -94,6 +94,12 @@ class AccountEdiXmlUBL21Zatca(models.AbstractModel):
         return [{'actual_delivery_date': invoice.delivery_date or invoice.invoice_date,
                  'delivery_address_vals': self._get_partner_address_vals(shipping_address) if shipping_address else {},}]
 
+    def _get_partner_contact_vals(self, partner):
+        res = super()._get_partner_contact_vals(partner)
+        if res.get('telephone'):
+            res['telephone'] = res['telephone'].replace(' ', '')
+        return res
+
     def _get_partner_party_identification_vals_list(self, partner):
         """ Override to include/update values specific to ZATCA's UBL 2.1 specs """
         return [{
diff --git a/addons/l10n_sa_edi/tests/compliance/simplified/credit.xml b/addons/l10n_sa_edi/tests/compliance/simplified/credit.xml
index 4397c2e53f8..3a8a785246f 100644
--- a/addons/l10n_sa_edi/tests/compliance/simplified/credit.xml
+++ b/addons/l10n_sa_edi/tests/compliance/simplified/credit.xml
@@ -101,7 +101,7 @@
       <cac:Contact>
         <cbc:ID>1</cbc:ID>
         <cbc:Name>SA Company Test</cbc:Name>
-        <cbc:Telephone>+966 51 234 5678</cbc:Telephone>
+        <cbc:Telephone>+966512345678</cbc:Telephone>
         <cbc:ElectronicMail>info@company.saexample.com</cbc:ElectronicMail>
       </cac:Contact>
     </cac:Party>
diff --git a/addons/l10n_sa_edi/tests/compliance/simplified/debit.xml b/addons/l10n_sa_edi/tests/compliance/simplified/debit.xml
index b89bb2b738e..b6349951ab0 100644
--- a/addons/l10n_sa_edi/tests/compliance/simplified/debit.xml
+++ b/addons/l10n_sa_edi/tests/compliance/simplified/debit.xml
@@ -101,7 +101,7 @@
       <cac:Contact>
         <cbc:ID>1</cbc:ID>
         <cbc:Name>SA Company Test</cbc:Name>
-        <cbc:Telephone>+966 51 234 5678</cbc:Telephone>
+        <cbc:Telephone>+966512345678</cbc:Telephone>
         <cbc:ElectronicMail>info@company.saexample.com</cbc:ElectronicMail>
       </cac:Contact>
     </cac:Party>
diff --git a/addons/l10n_sa_edi/tests/compliance/simplified/invoice.xml b/addons/l10n_sa_edi/tests/compliance/simplified/invoice.xml
index cf8facbfa33..28c294e86b1 100644
--- a/addons/l10n_sa_edi/tests/compliance/simplified/invoice.xml
+++ b/addons/l10n_sa_edi/tests/compliance/simplified/invoice.xml
@@ -96,7 +96,7 @@
       <cac:Contact>
         <cbc:ID>1</cbc:ID>
         <cbc:Name>SA Company Test</cbc:Name>
-        <cbc:Telephone>+966 51 234 5678</cbc:Telephone>
+        <cbc:Telephone>+966512345678</cbc:Telephone>
         <cbc:ElectronicMail>info@company.saexample.com</cbc:ElectronicMail>
       </cac:Contact>
     </cac:Party>
diff --git a/addons/l10n_sa_edi/tests/compliance/standard/credit.xml b/addons/l10n_sa_edi/tests/compliance/standard/credit.xml
index 0db2edb6f76..dc3da47e48e 100644
--- a/addons/l10n_sa_edi/tests/compliance/standard/credit.xml
+++ b/addons/l10n_sa_edi/tests/compliance/standard/credit.xml
@@ -95,7 +95,7 @@
             <cac:Contact>
                 <cbc:ID>337</cbc:ID>
                 <cbc:Name>SA Company Test</cbc:Name>
-                <cbc:Telephone>+966 51 234 5678</cbc:Telephone>
+                <cbc:Telephone>+966512345678</cbc:Telephone>
                 <cbc:ElectronicMail>info@company.saexample.com</cbc:ElectronicMail>
             </cac:Contact>
         </cac:Party>
diff --git a/addons/l10n_sa_edi/tests/compliance/standard/debit.xml b/addons/l10n_sa_edi/tests/compliance/standard/debit.xml
index 4b314353233..690cedce8c0 100644
--- a/addons/l10n_sa_edi/tests/compliance/standard/debit.xml
+++ b/addons/l10n_sa_edi/tests/compliance/standard/debit.xml
@@ -95,7 +95,7 @@
             <cac:Contact>
                 <cbc:ID>547</cbc:ID>
                 <cbc:Name>SA Company Test</cbc:Name>
-                <cbc:Telephone>+966 51 234 5678</cbc:Telephone>
+                <cbc:Telephone>+966512345678</cbc:Telephone>
                 <cbc:ElectronicMail>info@company.saexample.com</cbc:ElectronicMail>
             </cac:Contact>
         </cac:Party>
diff --git a/addons/l10n_sa_edi/tests/compliance/standard/invoice.xml b/addons/l10n_sa_edi/tests/compliance/standard/invoice.xml
index 6fe81700176..a8cefd0386f 100644
--- a/addons/l10n_sa_edi/tests/compliance/standard/invoice.xml
+++ b/addons/l10n_sa_edi/tests/compliance/standard/invoice.xml
@@ -89,7 +89,7 @@
             <cac:Contact>
                 <cbc:ID>33</cbc:ID>
                 <cbc:Name>SA Company Test</cbc:Name>
-                <cbc:Telephone>+966 51 234 5678</cbc:Telephone>
+                <cbc:Telephone>+966512345678</cbc:Telephone>
                 <cbc:ElectronicMail>info@company.saexample.com</cbc:ElectronicMail>
             </cac:Contact>
         </cac:Party>