# How to submit supplement
* Login to Merchant Center and Click Invoices
* Find an order that needs to be submitted supplement and Click Supplement
* Enter the actual transaction HASH paid by the customer and click Check order
**A supplement may be submitted if the following conditions are met**
1. Payment has not been made for more than 1 hour after the order is closed
2. Receiving wallet adress is the same as the order
3. When the transaction amount is not the same, you can check the box to confirm that the HASH transaction amount shall prevail.
* Confirm the information and click Supplement
* Enter your login password and click Submit
* After the supplement is successful, the order status will be changed to Payment Success, and the system will call back the replenishment hash amount to the merchant callback receiving address
