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

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.

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    I get an error in PayPal Express form

    Asked by eventiAGC on March 15, 2017 at 08:09 AM

    Hi, I can't be able to set up payments via PayPal Express. I get this error

    [PayPal Express Error]

    -An error has occurred. Please contact form administrator for assistance.

    [Transaction refused because of an invalid argument. See additional error messages for details.]


    Username API, Password API and API signature are correct. 

    I don't find where is my error. 

    Thank you

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    JotForm Support

    Answered by AIDAN on March 15, 2017 at 11:43 AM

    Hi, thank you for contacting us.

    I believe you have your issue already handled according to https://www.jotform.com/answers/1092083

    If you have more questions or need further assistance, please let us know. Thank you.