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# Order Cancel API ## Overview Through this interface you can cancel order The API access is over HTTPS, and accessed from the `https://www.lipapay.com/api/CancelOrderController.htm`   ## Interface content ### Send Message Endpoint #### Product ENV ``` https://www.lipapay.com/api/CancelOrderController.htm ``` #### Sandbox ENV ``` api url: http://sandbox.lipapay.com/api/CancelOrderController.htm merchant url: http://sandbox.lipapay.com merchant id: test password:1234567890 key: Gw416RCMO8tD5MSUg5dok5uQGvR3rPpx ``` ### Request Method HTTP POST   ### Request Parameters | Field Name | Type | Required | Description | | --------------- | ------ | ------ | ---------------------------------------- | | merchantId | string | Y| It's created by LipaPay. Please contact via info@lipapay.com | | signType| string | Y| Sign type (e.g. MD5)| | sign| string | Y| The signed content is obtained by signing algorithm | | merchantOrderNo | string | Y| The merchant platform order number, It must be unique | | amount | string | Y| The amount of transaction (unit cent) | ## Response Judge the errorCode value.The cancellation of the order is successful if errorCode is "00000" . You must see the status.   ### Response Data Type application/json   ### Response Parameters | Field Name | Type | Required | Description| | --------------- | ------ | ------ | ---------------------- | | status| string | Y | Order cancellation status | | signType| string | Y | Sign type | | errorCode | string | Y | Cancel response code| | errorMsg| string | Y | Cancel response message | | sign| string | N | The signed content is obtained by signing algorithm | | merchantId | string | N | It's created by LipaPay | | merchantOrderNo| string | N | The merchant platform order number, It must be unique | | orderAmount| string | N | The amount of transaction (unit cent) | Examples: ``` Successfull response { "errorCode": "00000", "errorMsg": "SUCCESS", "status": "SUCCESS", "signType": "MD5" } Fail response { "errorCode": "100001", "errorMsg": "System Error", "status": "FAIL", "signType": "MD5" } { "orderAmount":"100" "merchantId":"2016051112014649173090" "errorCode": "300903", "errorMsg": "Merchant No exists", "signType": "MD5", "merchantOrderNo":"YYN16F52F7UHIU", "status": "FAIL" } ``` ## Signature rule 1.In accordance with the ASCII sort, add the encrypted key after the sorted content. Example: ``` amount=100&merchantId=2016051112014649173095&merchantOrderNo=0RJH8D4VAP6BOMMX&signType=MD5He4AXjdOmq1G2YH3RKVSS4kqU5VFa4aK ``` Signed content is: ``` 2f9d72ff509f8f3a4809e784b61e2caf ``` ## Error code | Error Code | Description| | --------- | ------------------------------ | | 00000| Successful cancellation of order | | 300101| Order dosen't exists | | 300903| Merchant dosen't exists | | 201001| Validate sign is error |