# Void

Void

Endpoint: POST /v3/payment/acq/void
Version: v3

## Header parameters:

  - `x-paykka-appid` (string, required)
    Entity identification, eg: 978594372956732
    Example: "978594372956732"

  - `x-paykka-timestamp` (string, required)
    Millisecond-level timestamp, it is recommended to exceed 5min
    Example: "1757387467986"

  - `x-paykka-nonce` (string, required)
    Request random numbers, anti-request replay
    Example: "4326048250346354435"

  - `x-paykka-sign-alg` (string, required)
    Signature Algorithm, eg: SHA256_WITH_RSA
    Example: "SHA256_WITH_RSA"

  - `x-paykka-sign` (string, required)
    signature value
    Example: "Mif3gh48xxxxxxxxx"

## Request fields (application/json):

  - `merchant_id` (string, required)
    Merchant ID
    Example: "18356675194960"

  - `order_id` (string, required)
    PayKKa order number
    Example: "GW200395192979024625"

  - `reason` (string)
    DUPLICATE: Duplicate Order  
FRAUDULENT: Fraudulent  
REQUESTED_BY_CUSTOMER: Requested by Customer  
OTHER: Other
    Enum: "DUPLICATE", "FRAUDULENT", "REQUESTED_BY_CUSTOMER", "OTHER"

## Response 200 fields (*/*):

  - `ret_code` (string, required)
    ResultCode of current request

  - `ret_msg` (string, required)
    ResultMessage of current request

## Response 400 fields (application/json):

  - `ret_code` (string, required)
    ResultCode of current request

  - `ret_msg` (string, required)
    ResultMessage of current request

## Response 401 fields (application/json):

  - `ret_code` (string, required)
    ResultCode of current request

  - `ret_msg` (string, required)
    ResultMessage of current request

## Response 403 fields (application/json):

  - `ret_code` (string, required)
    ResultCode of current request

  - `ret_msg` (string, required)
    ResultMessage of current request

## Response 404 fields (application/json):

  - `ret_code` (string, required)
    ResultCode of current request

  - `ret_msg` (string, required)
    ResultMessage of current request

## Response 429 fields (application/json):

  - `ret_code` (string, required)
    ResultCode of current request

  - `ret_msg` (string, required)
    ResultMessage of current request

## Response 500 fields (application/json):

  - `ret_code` (string, required)
    ResultCode of current request

  - `ret_msg` (string, required)
    ResultMessage of current request