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

    Matrix Field: How to ensure that all input answers are unique per submission

    Asked by MarkSir on January 26, 2016 at 03:42 AM

    Students have to rank 76 subject groups and each subject group can only be chosen once. 

    In each field, they have to use a code. They need to type in instead of using a pull down menu as with 76 choices, the pull down menu will become to long.

    Page URL:

  • Profile Image
    JotForm Support

    Answered by Mike on January 26, 2016 at 10:57 AM

    Unfortunately, we do not provide unique value validation option for a Matrix field type. We would like to recommend you to stick with the Orderable List widget.

    If you need any further assistance, please let us know.