3. Callback To Merchant Portal

CallBack/ Response URL
<YourCallBackURL>?trackid=xxxx&result=xxxx&refid=&errormessage=&Hash=xxxx
Call Back Response Parameters
Parameters
Data Type
Description
trackid
string
Reference ID passed in the request.
result
string
Payment result.
Example: CAPTURED, NOT CAPTURED, DECLINED, REJECTED, BLOCKED.
refid
string
Payment Reference Number.
error message
string
If result is other than CAPTURED, then it gives you the actual reason.
hash
string
Use this for integrity of the data explained in response integrity section
How to identify parameters that are tampered?
If you want to check whether the parameters tamper or not, convert below parameters into a hash and compare with your hash which you got as a response in a query string.
Use the below method to identify parameter tempering.  
  String outParams = $"trackid={trackid}&result={result}&refid={refid}";
  String outhashValue = GetHashValue(outParams,_key);
  if (Hash != outhashValue)
  {
  //This means it is tampered
  // Your code
  }
  else{
  }

2. Redirect to Payment URL

4. Compute HASH

Last updated 1 year ago

Parameters	Data Type	Description
`trackid`	string	Reference ID passed in the request.
`result`	string	Payment result. Example: CAPTURED, NOT CAPTURED, DECLINED, REJECTED, BLOCKED.
`refid`	string	Payment Reference Number.
`error message`	string	If result is other than CAPTURED, then it gives you the actual reason.
`hash`	string	Use this for integrity of the data explained in response integrity section