- JotForm SupportJanAnswered on May 20, 2015 at 10:18 AM
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.
Let us know if you need any help. Thank you.