# Freespin Create ## Description > By this method, operators can cancel the free round reward activities that have been created. However, players who have already participated will continue to complete the rewards and will not be affected. > Request method:( Host-> BeSoft):post > Encoding method:application/x-www-form-urlencoded > Besoft The response data format is: application/json ## Method URL ``` {besoftapi}/api/bonus/cancel ``` ## Hash computation Hash code is calculated through the following steps: Obtain all parameters (expected hash) from the request POST parameters and append them to the string: - 1. Sort all parameters in alphabetical order. - 2. Append them in key1=value1&key2=value2 (if the values are not empty) - 3. Additional key, namely: ``` key1=value1&key2=value&hashkey=djds83h^&*j3u5j32 ``` - 4. Calculate the hash using MD5 and convert it to all uppercase letters. - 5. Append the name "hash" to the parameter instead of the hashkey field. The final parameter is: ``` key1=value1&key2=value&hash=3E8ABC6949A0A0CFF9110CF1128FBE25 ``` - 6. If the comparison between the platform and the hash parameter fails. Send error code 1008. ## Request Parameters | Name | Type | Required | Description | | :--------: | :---------: | :------: | :-------------------------------------------------: | | extension1 | string | Y | Agent account | | cert | string | Y | Security code | | bonuscode | String(128) | Y | The unique reward identifier in the operator system | | hash | string | Y | The requested hash code | ## Example - URL: - http://127.0.0.1:8000/api/bonus/cancel - HTTP Method - POST - Form Data > Content-Type: application/x-www-form-urlencoded ``` extension1: adminweb cert: v8VMKKzlPpD0te4rX99Hgefs3PQrBFWJKiuUqg6Y bonuscode: aaabbbccc hash: 3ECE2322AA1952D0A818DD1F09493B60 ``` ## Return Result | Name | Type| Description | | :--: | :----: | :------: | | ret | int | status code | | info | string | Result description | ## Successful Result ``` { "ret": -1, "info": "ok" } ``` ## Failed Result ``` { "ret": 1008, "info": "param erro" } ```