ENGCOM-5516: Fixed #23897 Sales Configuration in the Minimum Amount field have not proper validation #23898

 - Merge Pull Request #23898 from kirtinariya1/magento2-1:fixed-salesconfiguration
 - Merged commits:
   1. dc7757d
   2. 28869c6
   3. f85499d

Author: magento-engcom-team

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

@@ -92,6 +92,7 @@
                 </field>
                 <field id="amount" translate="label comment" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="0">
                     <label>Minimum Amount</label>
+                    <validate>validate-number validate-greater-than-zero</validate>
                     <comment>Subtotal after discount</comment>
                 </field>
                 <field id="include_discount_amount" translate="label" sortOrder="12" type="select" showInDefault="1" showInWebsite="1" showInStore="0" canRestore="1">