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.

  • Profile Image

    After submitting the form I get this error "Security error - Security header is not valid"

    Asked by stormqb on December 26, 2013 at 10:28 AM

    Customers get an error stating "Security error- Security Header is not valid" when they try to submit payment.

    Page URL:

  • Profile Image

    Answered by EliezerN on December 26, 2013 at 11:38 AM

    This error has happened to other users in the past too and one of the causes of this issue is because they had entered incorrect API login credentials. So, please make sure that you are entering the correct API username, password, and signature. 

    If your API login is incorrect, make sure to correct it and then test your form again.

    Please inform us if you need further assistance with this.