Prevent duplicate registration

Alvim
New Member

Hi

In the form below, the user can register an activity.

How could I prevent another user from making an exactly the same release?

3X_1_2_1206b9ad7285efdb46f13f2091b30c1e110b5a8a.png

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1 ACCEPTED SOLUTION

You put your expression in show_if instead of valid_if.

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