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.
Thanks for contacting us.
As I understood, you want to add custom unique number to your Form Submissions. You can set this with our new "Unique ID" field.
Search "Unique ID" at "More Fields" and add it to your form.
Then click the field. You can customize this number as you can see below:
If you have any questions, feel free contact us.