Hi,

Just found below solution on internet.

1. insert below javascript to Form Setting Custom Javascript section

function allValuesUnique(Item)

{

var allValuesUnique = true;

debugger;

NWF$.each(Item, function (key1, value1) {

NWF$.each(Item, function (key2, value2) {

if (key2 != key1 && value2 == value1)

{

allValuesUnique = false;

}

});

});

return allValuesUnique;

}

2. Create a new rule based on Repeater section

3. Select Rule Type - Validation

4. Set Condition - !allValuesUnique(<Dropdown Control Name>)

Thanks,

Swapnil

Hi, The script is not working for me, is this working for you?

Yes, all runs fine. Have you created rule and specified name of the dropdown in it?

Swap

Have you tried below solution again?

That didn't work for me probably because my dropdown is a lookup value from another list

I think this solution should work for lookup field dropdown value as well.

I will again try and will let you know If I am getting any error

Hi, could be done also without JS with classic rules? If you use responsive design forms you can't use JS anymore. Thanks.