I have the following problem:

I have a list on sharepoint. The user creates an item and selects from the drop-down list the month to which the item relates. The user should not be able to create two items for the same month.

How could I make such a restriction?

I would be grateful for help

  • I think you will need to customize list form using Power Apps to check existing data and restrict user from submitting new items. Mar 16 at 13:18


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