Request for help for generating checksum

[dexterprabhakar]

Hi @YaMo97 @ArunYogi , We are trying to use this plugin for integration of paytm in our cordova application. We are stuck at checksum point and has no idea how it will be generated within mobile application.

Would be really helpful if anyone can guide us for the same.

Regards Prabhakar

[ArunYogi]

Checksum has to be constructed at backend. Paytm provides checksum creation and validation utilities based on the platform , you have build your backend system. check the list here https://github.com/Paytm-Payments?utf8=%E2%9C%93&q=checksum&type=&language=

[dexterprabhakar]

Hi Arun, Thanks for quick reply. We also thought so just needed affirmation. A small query, we do not understand where we have to do : Declare car paytm: any; As per docs it needs to be done in .ts file. There is no such declaration file in our cordova project.  Would appreciate your guidance . RegardsGet Outlook for Android From: ArunYogi notifications@github.com Sent: Saturday, August 31, 2019, 6:06 PM To: ArunYogi/paytm-cordova-plugin Cc: dexterprabhakar; Author Subject: Re: [ArunYogi/paytm-cordova-plugin] Request for help for generating checksum (#31)

Checksum has to be constructed at backend. Paytm provides checksum creation and validation utilities based on the platform , you have build your backend system.

check the list here https://github.com/Paytm-Payments?utf8=%E2%9C%93&q=checksum&type=&language=

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[dexterprabhakar]

Hi @ArunYogi @YaMo97 any idea how to do this ?

Add below line to declaration.d.ts file

declare var paytm : any;

*we dont have any declaration.d.ts file

[ArunYogi]

Hi @ArunYogi @YaMo97 any idea how to do this ?

Add below line to declaration.d.ts file

declare var paytm : any;

*we dont have any declaration.d.ts file

Please refer this link https://github.com/ArunYogi/paytm-cordova-plugin/blob/master/README-IONIC.md

[dexterprabhakar]

thanks @ArunYogi but we are not in ionic. We are using cordova.

[ArunYogi]

thanks @ArunYogi but we are not in ionic. We are using cordova.

that's fine, the core concept is, you have to declare a global variable named "Paytm" at the start of the file (where you are accessing the payment details) and start calling method mentioned in read me file.

[dexterprabhakar]

Hi @ArunYogi @YaMo97 finally we have been able to access the paytm plugin. We are also able to start the transcation. The startPayment function starts the flow, opens the paytm payment page for a fraction of second and then sends the callback in success. In success we gets transcation failure because of invalid checksum.

Point to be highlighted here is the same web and backend code is working fine from website. we are able to make successful transcations from there but not from the plugin.

Your help will be really appriciated.

[dexterprabhakar]

Hi @ArunYogi we have sorted the issue with keys. the paytm plugin is working ok on android environment. Now we have issue with ios environment where its giving us missing key error with response code -1. we are sending txn amount as string only. any ideas what could be wrong ???

[ArunYogi]

@dexterprabhakar , please post the request u are sending to the plugin and simulator logs... With these information, I can assist you.

[dexterprabhakar]

The first options are from my backend server. The second options are what i am sending to paytm plugin. last line is what am getting in failure callback

[dexterprabhakar]

@ArunYogi these are logs from xCode. something weird. as per these logs payTM plugin not found.

[ArunYogi]

@dexterprabhakar , "CDVPlugin class PayTMCordova (pluginName:PaytM) does not exists" -> The plugin is not installed in iOS platform properly. Please remove and add the plugin.

Further I hope you are trying this in sandbox environment and not production.

• The "Retail" in INDUSTRY_TYPE_ID fields, says that u r trying for sandbox environment. But "ENVIRONMENT" field holds "production" value. This mismatch should be resolved with proper value based on the environment you are trying.
  • CUST_ID field holds only String value, you are sending a number formatted data. Please change it.
  • You don't have to specify callback url, this plugin will take care of it.
  • Please check the value for WEBSITE as well.

[dexterprabhakar]

@ArunYogi thanks for the input.

1. The plugin in earlier screenshot was not installed properly. PFA updated screenshot.
2. This is production environment and same values are being sent from android. (Industry type, cust id and environment)
3. Callback url is not used anywhere its website code fallback

[dexterprabhakar]

@ArunYogi looks like it was customer id issue only. we changed it to string and its working now. Thanks for your support.

cheers