[TW seller Only]Important Requirements: Market Specification for API Requests

To ensure proper market context and avoid request failures, all API requests—whether made via Postman or production code—must include the following HTTP header:

X-MARKET: TW

This header explicitly specifies that the request is intended for the Taiwan market.

Action Required:
Please review your API integration and confirm that this header is consistently included in all relevant requests.

We sincerely hope you can complete the above checks and adjustments by September 29, 2025.
We will begin API validation and adjustment work in October, which may have a certain impact on your requests at that time.

Thank you for your cooperation and understanding.