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Hi,
I was wondering if there is a clever way to mark a question containing checkbox questions (more than 1 answer possible) mandatory that at least 1 checkbox is ticked.
In the example: I can define an error message for Container 6 if no checkbox out of those three are ticked. I know I can make each single checkbox mandatory, but that's not the point and would be detrimental in my survey case.
Thanks!
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