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Power Platform Community / Forums / Power Apps / Index table - Prevent ...
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Index table - Prevent duplicate based on lookup column

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Hello, 

 

I am currently designing a Dataverse structure where an index table where each row is connected to Entity A and Entity B through lookup columns. I am trying to prevent duplicate in a way that a row can't be entered based on the value of a column in entity B. Is it something that can be done?

 

Ex: 

Item A is linked to Group A (value of the Company column in Group A= ABC) = Okay!

Item A is linked to Group B. (value of the Company column in Group B= DEF) = Okay!

Item A is linked to Group C. (value of the Company column in Group C= ABC) = Not okay!

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