This is the English briefing. The full Thai guide includes additional examples and checklists. ไทย ↗
Link every returned item to its original sale line and remaining returnable quantity. Keep the original discount allocation for partial returns.
Define the records and rules
Link every returned item to its original sale line and remaining returnable quantity. Keep the original discount allocation for partial returns.
Connect the operational workflow
Separate refund approval from stock disposition. A damaged return should not immediately become sellable inventory.
Checks before implementation
Test partial bundle returns, expired promotions and previously redeemed points. Keep the approver, reason and original transaction in the audit trail.
Further reading from primary sources
These references support the standards and integration topics discussed. Workflow examples and figures illustrate system design.
Sources checked: 11 October 2026. Confirm current API access and requirements before implementation.