Starting from December 25, 2025 (UTC+8), the system will no longer automatically apply the best coupons for calls to the ApsaraDB for MongoDB TransformToPrePaid and TransformInstanceChargeType operations. If your code relies on this feature, update it before the change takes effect to avoid unexpected charges.
What to do
Check the code that calls the affected operations through OpenAPI. Modify the value of the CouponNo parameter according to your business requirements using the table below.
Requirement | Action | Description |
The system continues to automatically select the best coupon | Pass the parameter | This is the recommended action to maintain the existing behavior. |
Use a specific coupon | Pass the parameter | This behavior remains unchanged. |
Use no coupons (New default behavior) | Do not pass the | If the original code is not modified, the system will not automatically apply coupons, which may result in higher-than-expected payment. |
Details
The core change is that coupon application shifts from automated matching to explicit specification.
Before: If the
CouponNoparameter is not passed, the system automatically matches and applies the best available coupon.After: If the
CouponNoparameter is not passed, the system does not apply any coupons. The order is billed at the original price.
Scope of impact
Item | Description |
Effective time | December 25, 2025 (UTC+8) |
Affected operations |
|
Other business logic | Other features and parameters of the operations are not affected. |
Evaluate the current invocation logic, adjust parameters as needed, and confirm billing works as expected before the update.