Booking date and time

My form should let users select a date and a time slot from a choice control only one time. One the time has been taken for that date no one should be able to book it again. I'm looking for some kind of validation rule within the form.


I decided to go with date only and choice ocntrol for the time as I need 30 minutes interval. Not sure how to accomplish this, any help would be appreciated.



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Re: Booking date and time

@Arianeb I've seen this type of request come through a lot and its quite tricky. 


Essentially you will want the form to prevent someone from selecting an item that has already been requested, but the validation won't be known until the item is saved. I could be wrong, but that is what I've seen when doing something like that myself. 


If you can share more details or export the form, I may be able to assist you with this.

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