I have nested datalists using code provided by multiple boards, which all was the exact same. (Categories and Products example)

My problem is I have an item (category) that doesn't have a relevant item (product) where others do. And I keep getting the following error
"This constraint cannot be enabled as not all values have corresponding parent values. "

So if I where using Categories and Product it would look like this.
Fruit
Apples Oranges

Meat
Hamburger Hotdogs

Vegis

Dairy

Bread
Donuts

//There is no products for the Vegis and Dairy so it throws the error mentioned above.

Is there a good way to handle this?


Daniel A. Miller