Paytm checksum mismatch - Android Paytm SDK Error: 330

This may be possibly duplicates of other questions, I checked on every where for solutions, But didn't find right solution for this Paytm checksum mismatch.

i am getting checksum mismatch error in paytm to android app i have created check sum in php(On my Server) and sending from server to android app.once app received checksum then this parameters along with checksum will go to server to verify check sum and for payment.

I am receiving following response:

[{STATUS=TXN_FAILURE, CHECKSUMHASH="***", ORDERID=e5992c72f44648799e034df284f4f339, TXNAMOUNT=100.00, MID=222, RESPCODE=330, BANKTXNID=, CURRENCY=INR, RESPMSG=Paytm checksum mismatch.}]

This is Request data:

 {
    "CALLBACK_URL":"https://securegw.paytm.in/theia/paytmCallback?ORDER_ID=d53a1edd5f8fb46539c793476700b576c",
    "CHANNEL_ID":"WAP",
    "CUST_ID":"0fbfd97306a748298477aa7c11fb8040",
    "INDUSTRY_TYPE_ID":"Retail",
    "MID":"myMID",
    "ORDER_ID":"53a1edd5f8fb46539c793476700b576c",
    "TXN_AMOUNT":"100",
    "WEBSITE":"APPSTAGING"
    }

I have also checked issue on Android Paytm, but i didn't find any solution for this. kindly note that i am using same parameters on both side (App & Web).

Your small suggestions can help me a lot!!

Thanks.

Solution

I faced the same Issue. I sent proper data from app for creating checksum to My server. But server was creating checksum with different values. So I received "Checksum mismatch error". You can also do cross-check from your app and your server keys. server url & parameters that both side you are using same parameters values.

By doing this i solved my issue. Hope this agenda will help you also.