Hi,

Please refer to the following link:

1. https://www.cybrosys.com/blog/how-to-create-a-new-payment-provider-for-online-transactions-in-odoo-16

Hope it helps.

You can configure the payment provider and payment methods of your preference by following these steps:https://www.odoo.com/documentation/18.0/applications/finance/payment_providers.html

You can then configure the desired payment methods like Card Payments, ACH etc.

For Payment Transactions on websites, Enable "Online Payment" in Sales > Configuration > Settings > Quotations & Orders. Odoo will then automatically confirm successful online transactions. and for E-commence, navigate to the Configuration and then payment Methods.