To set up a payment gateway on Shopify , you typically need to provide business and identity documents rather than a "txt file" for the gateway itself. However, there are specific scenarios where a .txt file or a "paper" (document) is required. 📄 1. Required "Papers" (Documents) for Payment Gateways

Some third-party gateways or services (like Google or Facebook) require you to add a TXT record to your DNS settings to prove you own the site ( Shopify DNS Settings ).

Upload the file to Content > Files , copy the link, and paste it into your product description or a "thank you" email. Could you clarify which part you need help with? Are you trying to verify your domain with a TXT record?

Do you need a for a specific country's payment gateway?