system.xml is placed in sales module

Author: solwininfotech

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

@@ -86,11 +86,6 @@
                     <comment>To show VAT number on Storefront, set Show VAT Number on Storefront option to Yes.</comment>
                     <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                 </field>
-                <field id="email_required_create_order" translate="label comment" type="select" sortOrder="58" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
-                    <label>Email is required field for Admin order creation</label>
-                    <comment>If set YES Email field will be required during Admin order creation for new Customer.</comment>
-                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
-                </field>
                 <field id="email_domain" translate="label" type="text" sortOrder="60" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
                     <label>Default Email Domain</label>
                 </field>

app/code/Magento/Customer/etc/config.xml

@@ -15,7 +15,6 @@
                 <confirm>0</confirm>
                 <default_group>1</default_group>
                 <tax_calculation_address_type>billing</tax_calculation_address_type>
-                <email_required_create_order>0</email_required_create_order>
                 <email_domain>example.com</email_domain>
                 <email_identity>general</email_identity>
                 <email_template>customer_create_account_email_template</email_template>

app/code/Magento/Customer/i18n/en_US.csv

@@ -539,5 +539,3 @@ Associate to Website,Associate to Website
 Prefix,Prefix
 Middle Name/Initial,Middle Name/Initial
 Suffix,Suffix
-Email is required field for Admin order creation,Email is required field for Admin order creation
-If set YES Email field will be required during Admin order creation for new Customer.,If set YES Email field will be required during Admin order creation for new Customer.

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

@@ -446,5 +446,15 @@
                 </field>
             </group>
         </section>
+        <section id="customer">
+          <group id="create_account" translate="label" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
+              <label>Create New Account Options</label>
+              <field id="email_required_create_order" translate="label comment" type="select" sortOrder="58" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
+                  <label>Email is required field for Admin order creation</label>
+                  <comment>If set YES Email field will be required during Admin order creation for new Customer.</comment>
+                  <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
+              </field>
+          </group>
+        </section>
     </system>
 </config>

app/code/Magento/Sales/etc/config.xml

@@ -111,5 +111,10 @@
                 <async_indexing>0</async_indexing>
             </grid>
         </dev>
+        <customer>
+          <create_account>
+              <email_required_create_order>0</email_required_create_order>
+          </create_account>
+        </customer>
     </default>
 </config>