Magento 2 - How to enable bank transfer only for admin order creation?

Question

We have only one online payment service for the customer, how to enable bank transfer only for admin order creation?

Answer 1

To enable a "payment method" only for admin can you please refer the below link

1. Magento2: How to add a payment method to admin create order?

2. https://blog.e-zest.com/making-payment-method-visible-only-for-admin-in-magento-2

It's worked for me, Try the below one

app/code/Gta/AdminPay/registration.php

<?php
\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'Gta_AdminPay',
    __DIR__
);

app/code/Gta/AdminPay/etc/module.xml

<?xml version="1.0"?>
<config xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
    <module name="Gta_AdminPay" setup_version="1.0.1"></module>
</config>

app/code/Gta/AdminPay/etc/events.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="payment_method_is_active">
        <observer name="gta_payment_filters" instance="\Gta\AdminPay\Observer\PaymentMethodAvailable" />
    </event>
</config>

app/code/Gta/AdminPay/Observer/PaymentMethodAvailable.php

<?php
namespace Gta\AdminPay\Observer;
use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\App\Request\DataPersistorInterface;
use Magento\Framework\App\ObjectManager;

class PaymentMethodAvailable implements ObserverInterface
{
    public function __construct(\Psr\Log\LoggerInterface $logger
     )
    {
        $this->_logger = $logger;     
    }
    
    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        $result          = $observer->getEvent()->getResult();
        $method_instance = $observer->getEvent()->getMethodInstance();
        $quote           = $observer->getEvent()->getQuote();
        $this->_logger->info($method_instance->getCode());

        /* Enable All payment gateway  exclude Your payment Gateway*/
        if ($method_instance->getCode() == 'checkmo') {
            $result->setData('is_available', false);
        }
        else
        {
            $result->setData('is_available', true);
        }
    }
}

Answer 2

If you need a payment option that is only available internally (admin area), we created an extension for that https://github.com/customgento/module-admin-payment-m2.