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.
The error "Field value must fill mask" appears if the user did not complete the field or if they enter an incomplete data. It means that the field that has input masks enabled must be filled up completely.
1. When the field is selected, click the "Input Mask" button and then add masks. For numbers, it is the hash tag symbol (#). You need to enable the "Fill Mask Validation" so that the form cannot be submitted if the field is incomplete. On top of that, you need to turn on the "Required" option.
2. This should be the result if you put an incomplete data.
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