Keep the order understandable when payment is delayed or fails.

Confirm the offer and provider

Your business approves the seller, customers, included service, price, refunds and invoice details. Confirm eligibility, supported methods, settlement and authorised test access directly with the actual provider.

Agree currency and language

Distinguish display, charge, settlement and reporting currencies. Check THB formatting and rounding where used, and have the appointed reviewer approve instructions and error messages.

Test the uncertain states

Handle pending, confirmed, failed, cancelled and refunded outcomes. Repeated clicks or delayed notifications should not create duplicate fulfilment. Give customers an honest status and staff an investigation route.

Match the records

Connect order and provider references to receipts, refunds and accounting. Qualified advisers determine applicable tax and invoicing requirements for the actual transaction.

Use the official payment and tax starting points, read data handling or discuss an approved transaction.