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

    How can i create a number field that auto populates and does not duplicate sequential numbers?

    Asked by bhaack on March 08, 2017 at 06:26 PM

    This is for an auction and each auction items requires a unique number.

    Page URL:

  • Profile Image
    JotForm Support

    Answered by Mike_G on March 08, 2017 at 09:31 PM

    I would suggest you use a Unique ID widget in your form.

    The explanation for each property (Current Index, Prefix, and Number Padding) is found in this guide: How-to-Add-Custom-Unique-IDs-to-your-Form-Submissions

    I hope this helps. Feel free to contact us again anytime if you need any further assistance.

    Thank you.