Blogs & Resources
Explore our guides, announcements, and deep dives into payments processing and integration.

May 2026
What Is Card-on-File? A Complete Guide for Sri Lankan Merchants
Card-on-file lets your customers save their card details once and pay with a single click on every future visit. Learn how it works on OnePay.

May 2026
How Hotels Can Accept Online Payments
Every unconfirmed booking is a booking you're about to lose. Here's the simple, modern fix for Sri Lankan Hotels & Tour Operators.

May 2026
"Do Not Honour" Explained: Response Code 05
A complete guide for Sri Lankan Merchants on what a 'Do Not Honour' card decline means and how to recover the sale.

May 2025
Onepay Learning Center Basics
Learn how to complete the initial setup, password reset, and merchant portal configuration for Onepay.