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.

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    How can I avoid two fields to have the same value?

    Asked by HermodsAB on November 14, 2016 at 11:25 AM
    Second rule is that field 5 and field 14 cannot be identical. 
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    JotForm Support

    Answered by Kevin_G on November 14, 2016 at 11:43 AM

    You will need to use conditions to achieve this, this way you will be able to display a message indicating that the entered value cannot be the same in both fields. 

    Here's a guide that will help you to show or hide fields based on other fields answer: How-to-Show-or-Hide-Fields-Base-on-User-s-Answer

    Here's a demo form that I made: https://form.jotform.com/63184810284961 

    Feel free to clone it by following this guide: How-to-Clone-an-Existing-Form-from-a-URL