MC-35600: The customer creation page not opens without default group selected

Author: zakdma

app/code/Magento/Customer/etc/adminhtml/system.xml

@@ -48,31 +48,27 @@
                     <depends>
                         <field id="auto_group_assign">1</field>
                     </depends>
-                    <validate>required-entry</validate>
                 </field>
                 <field id="viv_intra_union_group" translate="label" type="select" sortOrder="40" showInDefault="1" showInWebsite="1" showInStore="1">
                     <label>Group for Valid VAT ID - Intra-Union</label>
                     <source_model>Magento\Customer\Model\Config\Source\Group</source_model>
                     <depends>
                         <field id="auto_group_assign">1</field>
                     </depends>
-                    <validate>required-entry</validate>
                 </field>
                 <field id="viv_invalid_group" translate="label" type="select" sortOrder="50" showInDefault="1" showInWebsite="1" showInStore="1">
                     <label>Group for Invalid VAT ID</label>
                     <source_model>Magento\Customer\Model\Config\Source\Group</source_model>
                     <depends>
                         <field id="auto_group_assign">1</field>
                     </depends>
-                    <validate>required-entry</validate>
                 </field>
                 <field id="viv_error_group" translate="label" type="select" sortOrder="55" showInDefault="1" showInWebsite="1" showInStore="1">
                     <label>Validation Error Group</label>
                     <source_model>Magento\Customer\Model\Config\Source\Group</source_model>
                     <depends>
                         <field id="auto_group_assign">1</field>
                     </depends>
-                    <validate>required-entry</validate>
                 </field>
                 <field id="viv_on_each_transaction" translate="label" type="select" sortOrder="56" showInDefault="1" showInWebsite="1" showInStore="1">
                     <label>Validate on Each Transaction</label>