Hello. This is Klaytn API Service team. 

Please refer to the following information about how to get a refund when you make an overpayment.

[For Business Operator Users]

If you make a deposit with an excess of the intended amount, we do not issue automatic refunds.

However, you can request a refund for your overpaid balance. To request a refund, please click

Pricing/ Payment Inquiry type on Inquiry Registration above the KAS Help Center page and

present us your KAS account, preferred bank account for issuing the refund, and business

registration certificate.

[For Individual Users]

If you make a deposit with an excess of the intended amount, we do not issue automatic refunds.

However, you can request a refund for your overpaid balance. To request a refund,  please click

Pricing/ Payment Inquiry type on Inquiry Registration above the KAS Help Center page and present us

your KAS account and preferred bank account for issuing the refund. 

For any additional questions, you may also select Inquiry Registration above the KAS Help Center page

where you can register your inquiry. 

Thank you.

Klaytn API Service team.