Payment method are not shown in admin magento 2

Question

    <?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
        <section id="payment">
                <group id="worldpaydirect" translate="label" sortOrder="2" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Custom Payment</label>
                    <field id="active" translate="label comment" sortOrder="1" type="select" showInDefault="1" showInWebsite="1" showInStore="0">
                        <label>Enable</label>
                        <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                    </field>
                </group>
        </section>
    </system>
</config> 

Admin: https://prnt.sc/mgtna4

In above screenshot custom Payment is not appear in stores>configuration>sales>payment methods

Answer 1

Please remove space before the xml TAG. check below code.

<?xml version="1.0"?>
    <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
        <system>
            <section id="payment">
                    <group id="worldpaydirect" translate="label" type="text" sortOrder="34" showInDefault="1" showInWebsite="1" showInStore="1">
                        <label>Custom Payment</label>
                        <field id="active" translate="label" type="select" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="0" canRestore="1">
                            <label>Enabled</label>
                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                        </field>
                    </group>
            </section>
        </system>
    </config>

Then run this command

php bin/magento cache:flush