Why Some Fields Cannot be Edited from a List View
Why are there certain fields I can’t edit from the List View?
There are two main reasons GoldFinch users cannot edit fields on the list:
The object has several Record Types and the list view is not filtered by one Record Type.
The fields that you want to edit are not available on the standard page layout.
For additional information, see https://help.salesforce.com/articleView?id=customviews_edit_inline_listview_lex.htm&type=5.