- JotForm DeveloperHelenAnswered on April 22, 2017 at 07:17 AM
Thank you for contacting us.
The "Validation" option is not available on the both of the version v3 and v4. There is no way to prevent submission of incomplete codes. However, the screenshot above shows "mask validation" option, it gives an error if the filled characters do not match the masks. In v4, if input mask value is modified and filled, "Fill mask validation" is enabled by default.
Please see the screenshot and let me know if you need anything further, thank you.
If you have any questions or issue, please do not hesitate to contact us.