Cancellations & Refunds

This guide explains how to cancel payments and process refunds. The cancellation method and API differ by payment method.

Cancellation Types

Type	Description	Supported Payment Methods
Full Cancellation	Cancel the full payment amount	All payment methods
Partial Cancellation	Cancel only a portion of the amount	Credit card, mobile payment, digital wallet, T-money, some gift cards
Virtual Account Issuance Cancellation	Cancel virtual account before deposit	Virtual account
Refund	Refund to customer's account after deposit	Virtual account, bank transfer, cash receipt

Cancellation Deadline Summary

Payment Method	Cancellation Deadline	Partial Cancellation	Notes
Credit Card	1 year	O	Same day: approval cancellation, next day+: purchase cancellation
Virtual Account	1 year	O	Before deposit: issuance cancellation, after deposit: Refund API
Bank Transfer	180 days	X	Same day: cancellation, next day+: refund
Mobile Payment	Current month	O	From next month: Refund API
T-money	90 days	O	-
Gift Card	1 year	△	Partial cancellation available for Teen Cash only
Point Damoa	1 year	X	Full cancellation then re-submit as a new payment
Digital Wallet	1 year	O	Same policy as credit card
Cash Receipt	Current year	X	Same day: cancellation, next day+: refund

Partial Cancellation Availability

Partial cancellation availability varies by merchant configuration. If partial cancellation is needed, please request the configuration from your sales representative.

Cancellation Method by Payment Method

Credit Card

Cancellation Deadline: Within 1 year from the payment date
Same-Day Cancellation: Approval cancellation (immediate)
Next Day or Later: Purchase cancellation
Partial Cancellation: Supported (cancellation sequence number must be incremented sequentially)

Merchant

Hecto Financial

Card Company

1Cancellation API Request

Cancellation API Request

2Forward Cancellation Request

Forward Cancellation Request

3Cancellation Result

Cancellation Result

4Immediate Result Return

Immediate Result Return

NOTE

Partial Cancellation Notes

For partial cancellation, cnclOrd (cancellation sequence number) must be incremented sequentially starting from 001. Example: 1st partial cancellation (cnclOrd=001), 2nd partial cancellation (cnclOrd=002)

Virtual Account

For virtual accounts, the cancellation/refund method differs depending on the status.

Status	Processing Method	API
Before Deposit	Issuance cancellation	Issuance Cancellation API
After Deposit	Refund (wire transfer to customer's account)	Refund API

Merchant

Hecto Financial

Customer

1Before Deposit: Issuance Cancellation API

Before Deposit: Issuance Cancellation API

2Issuance Cancellation Complete

Issuance Cancellation Complete

Merchant

Hecto Financial

Customer Account

1After Deposit: Refund API

After Deposit: Refund API

2Refund Registration Complete

Refund Registration Complete

3Next Business Day: Refund Transfer

Next Business Day: Refund Transfer

Virtual Account Refund Notes

Issuance cancellation is not possible for a virtual account after deposit has been completed. You must use the Refund API to refund to the customer's actual account.

Bank Transfer

Cancellation Deadline: Within 180 days
Same-Day Cancellation: Full cancellation only (real-time transfer to the withdrawal account)
Next Day or Later: Use Refund API (partial refund available)
Refund Account: The account used for payment or a separately designated account

NOTE

Bank Transfer Cancellation Special Notes

Only full cancellation is possible for same-day transactions. If partial cancellation is needed, use the Refund API from the next day.

Mobile Payment

Cancellation Method: Call the Cancellation API
Partial Cancellation: Supported
Cancellation Deadline: Until the last day of the payment month (use Refund API from the following month)

Mobile Payment Cannot Be Cancelled After the Payment Month

Mobile payment cannot be cancelled via API after the last day of the payment month. A refund from the following month requires a separate agreement with the carrier.

Gift Card

Cancellation Deadline: Within 1 year
Cancellation Method: Call the Cancellation API
Partial Cancellation: Varies by gift card type

Gift Card Type	Partial Cancellation
Teen Cash	O
Culture Cash	X
Book Gift Card	X
Smart Munhwa	X

NOTE

Gift Cards Without Partial Cancellation Support

Culture Cash, Book Gift Card, and Smart Munhwa do not support partial cancellation. Process using full cancellation followed by re-submission as a new payment.

Point Damoa

Cancellation Deadline: Within 1 year
Cancellation Method: Call the Cancellation API
Partial Cancellation: Not supported (full cancellation then re-submit as a new payment)

T-money

Cancellation Deadline: Within 90 days
Cancellation Method: Call the Cancellation API
Partial Cancellation: Supported (cancellation sequence number must be incremented sequentially)

Digital Wallet (KakaoPay, NaverPay, TossPay, PAYCO)

Cancellation Deadline: Within 1 year
Same-Day Cancellation: Immediate cancellation
Next Day or Later: Purchase cancellation (takes 3-5 days)
Partial Cancellation: Supported (cancellation sequence number must be incremented sequentially)

NOTE

Digital Wallet Cancellation Policy

Digital wallet payments are processed internally as a credit card, so the same cancellation policy as credit card applies. However, partial cancellation is not available when payment was made with a gift (prepaid) card.

Cash Receipt

Cancellation Deadline: Within the current year
Same-Day Cancellation: Immediate cancellation
Next Day or Later: Refund processing
Partial Cancellation: Not supported

Cash Receipt Cancellation Deadline

Cash receipts can only be cancelled within the year of issuance. Be aware that cancellation is not possible once the year changes.

Conditions Where Partial Cancellation Is Not Possible

Partial cancellation is not possible under the following conditions.

Condition	Payment Method	Alternative
Below minimum amount	All payment methods	Full cancellation then re-submission as a new payment
Gift (prepaid) card payment	Digital wallet	Full cancellation then re-submission as a new payment
Culture Cash / Book Gift Card / Smart Munhwa	Gift card	Full cancellation then re-submission as a new payment
Same-day transaction	Bank transfer	Refund API from next day
Merchant configuration not applied	All payment methods	Request configuration from sales representative

Minimum Amount by Payment Method

Payment Method	Minimum Cancellation Amount	Maximum Cancellation Amount
Credit Card	100 KRW	Negotiate with sales representative
Digital Wallet (Credit Card)	100 KRW	Negotiate with sales representative
Digital Wallet (Money/Points)	More than 0 KRW	Negotiate with sales representative
Cash Receipt	More than 0 KRW	Negotiate with sales representative
Virtual Account	More than 0 KRW	-

NOTE

Minimum Amount Warning

If the remaining amount after partial cancellation falls below the minimum amount, the partial cancellation may be declined.

Cancellation of Transactions Over 1 Year Old

The cancellation deadline for credit cards and digital wallet payments is 1 year, but you can directly cancel only within 1 year.

Elapsed Period	Cancellation Method
Within 1 year	Cancel directly via API or admin page
Over 1 year	Request to Hecto Financial representative

Cancellation of Transactions Over 1 Year

Transactions over 1 year old cannot be directly cancelled. If cancellation is needed, please contact your Hecto Financial representative.

Handling Cancellation Limit Exceeded

When cancellation is not possible due to insufficient settlement amount, automatic cancellation after reverse fund deposit can be processed.

Credit Card Reverse Cancellation Procedure

Request cancellation from the merchant admin
If settlement amount is insufficient, receive virtual account issuance guidance
Deposit the reverse fund amount to the issued virtual account
Automatic cancellation processed after deposit confirmation

NOTE

Reverse Cancellation Processing Time

Cancellation is automatically processed within approximately 5 minutes after deposit confirmation.

Cancellation Completion Timing

Cancellation API Response ≠ Actual Cancellation Complete

A successful response from the Cancellation API means the cancellation request has been accepted. There may be a delay before the actual cancellation processing is complete.

Payment Method	Cancellation Type	Actual Reflection Timing
Credit Card	Same-day approval cancellation	Immediate
Credit Card	Partial / purchase cancellation	3-5 days
Virtual Account	Refund	3-5 days (next business day deposit)
Bank Transfer	Same-day cancellation	Immediate (deposit to withdrawal account)
Digital Wallet	Purchase cancellation	3-5 days

Cancellation Response Codes

outStatCd	outRsltCd	Description
`0021`	`0000`	Cancellation successful
`0031`	`0001`	System error
`0031`	`0002`	Original transaction not found
`0031`	`0003`	Cancellable amount exceeded
`0031`	`0004`	Already cancelled transaction

NOTE

Handling Error Code 0003

Error 0003 means the merchant's settlement balance is insufficient to process this cancellation. Use the reverse fund deposit procedure described in the section below to resolve this.