Here you will learn what you can do, if you have several products in one category, in which one product needs a product fields which some other product in that category doesn't need.
Let's paint a scenario: You have three Sweatshirts in the category "Sweatshirt". While two of the products have different color variants, one product only has one color.
The problem: As you now added the product field "Farbe" (Color) to the category, you need to also fill out the product field for the one product that doesn't have different color variants.
The solution: In all channels there are many different categories that are similar to each other. Thus, the easiest solution is to go into "Select Categories" and find another category that fits for the product.
Continuing our example, you can see there are many different categories that you can place a sweatshirt in. After you have found a fitting category, you would just set up the category again but this time without the Product field "Farbe".
You can learn more about how to Set-Up categories for both Otto and the Avocadostore if you look at our help guides on how to publish your products, or just click here.
And that's already it!