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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

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    I am getting messge Authenyication failed when i click on paypal i have all the corect api information can you help

    Asked by matblond on July 08, 2012 at 06:41 PM

    details setexpresscheckout:timestamp

    Page URL:

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    Answered by jeanettebmz on July 08, 2012 at 07:07 PM

    I have checked your form , and I see the API username , the API password and the Signature have not been setup yet into the Paypal pro integration. As shown below


    In order to get such information , log into your PayPal account and get details on the left side from My Account -> Profile -> Request API credentials link.

    Should you need further assistance, let us know




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    Answered by matblond on July 09, 2012 at 05:35 PM
    Hi I have now got api credentials right but I am still getting an error
    message saying transaction refused invalid argument. Can you Help?
    Many Thanks
    Mathew Blond
  • Profile Image
    JotForm Support

    Answered by NeilVicente on July 09, 2012 at 06:49 PM


    You are getting that error because you're using JotForm's payment tool the wrong way. The option property can only be used to provide an option for a single product item.

    Each of the products must be added as a new one.

    Check out this clone of your form for an example: