Mandatory input field

[Aleksander_Wilberg]

Hi
Is it a way to make an input field mandatory, meaning that a user is not able to leave a field blank/has to input something into a field?

[Phil_Evans]

You have to use the logic on your submit button to do this. ie, An If node with IS_EMPTY(pvarInput) leading to a dialog box pointing out the error.

[Kirill_Leventcov]

For future ideas and future readers, you can find more information about inputs in the documentation:

Input validation