Question / Problem
How do I prevent duplicate values in the Date and time field or Time field?
Is there a native feature in Kintone to prevent users from inputting the same values in an App?
Yes, there is @Jayron_Rosel ~
An easy way to prevent users from entering the same values in a Kintone App is to use the Prohibit duplicate values setting.
For more information, refer to the following post: