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.
Are you are pertaining to the one found in the Text box or Text field properties? (Please see image below)
Then this is the option where you can choose an option for a valid character entry.
Like for example I created a text field and set it to numeric only for a valid entry format.
So if I will type Alphabetic there, I will get an error. (Please see screenshot below)
Hope this clarifies a bit and enlightened you with regards to valid entry format.
Kindly let us know if you have further questions or inquiry.
Thank you for using JotForm.