| Plan Upgrade | Move a customer from a lower-tier plan to a higher-tier plan (for example, Basic to Premium). |
| Plan Downgrade | Move a customer to a lower-priced plan or reduce the subscription commitment. |
| Update Item Values | Modify the products, quantities, pricing, or other item-level details associated with the subscription. |
| Change Billing Frequency | Change the billing cycle, such as Monthly to Yearly or Yearly to Monthly. |
| Update Reattempt Configuration | Modify the retry policy for failed recurring payment attempts. |
| Credit on Downgrade | When moving from a yearly subscription to a monthly subscription, the remaining unused value can be credited to the customer’s account according to the merchant’s business policy. |
