When setting effectivity, there is no indication as to what the objects are in the table. So, it isn't clear when docs are added accidently. When you try to set context, you get an error (which is not very informative). If you have a large number of parts to add effectivity, you will have to weed through them to find and remove the document(s) before continuing on. Suggest to display the object icons as the default.
vs having the following
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