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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    Do you have duplicate control / unique fields? Essentially prevent duplicate form entries in case we already have it in our database.

    Asked by Dhaval Udani on March 04, 2016 at 10:26 AM
    6. Do you have duplicate control / unique fields? Essentially prevent duplicate form entries in case we already have it in our database.
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    JotForm Support

    Answered by Charlie on March 04, 2016 at 11:07 AM

    Duplicate submissions can happen if the data submitted are the same. We cannot prevent this specifically because each submission (regardless if they have the same input) will have their own unique submission ID.

    If you want to prevent duplicate submission then that is possible with some limitations. Here are the guides that might be of a help:

    Setting unique submission based on the browser cookie OR IP address: http://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form 

    Setting unique submission based on a specific input field: http://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question 

     

    Let us know if you need more assistance on this.

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    Answered by mongaakshay on July 15, 2016 at 01:22 PM

    Hi

     

    Is it possible to somehow prevent duplicacy between two fields ?

    Meaning, if I have 2 fields, say 

    Primary Mobile Number 

    Secondary Mobile Number

     

    and I want to user to fill two different values and not same ?

     

    Can I achieve this, without actually submitting the form ?

     

     

    Also, if I want the user to fill two exactly same values like

    Email Address

    Reconfirm Email Address

    Here the user has to fill the same email address again. 

     

    How can both these be achieved through JotForm ?

     

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    JotForm Support

    Answered by Kiran on July 15, 2016 at 01:40 PM

    @mongaakshay,

    I have moved your question to a separate thread and shall be answered there shortly.

    https://www.jotform.com/answers/883669

    Thank you!

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    Answered by voodoocreative on September 13, 2016 at 09:47 PM

    I have 2 fields that need to be unique fields, the first one is the email address, and another one is a number field of 10 digits. As of now I can only pick one, unique question whick is I picked the email address but I also need the 10 digits to be a unique question to prevent previously entered values store in the database. How do I do that?
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    JotForm Support

    Answered by Kiran on September 13, 2016 at 11:39 PM

    @voodoocreative,

    Your question is moved to a separate thread and shall be answered there shortly. 

    https://www.jotform.com/answers/931647