I have a Subsite with many similar Libraries with Require Check Out enabled on all. This subsite has been somewhat problematic in general and it may be that I need to recreate and move everything anyway, though I am hoping not to need to resort to that. The weird thing that has only begun to happen recently, is I get an error message everytime I try checking in a new document I've added:
"Sorry, something went wrong. You must fill out all required properties before checking in this document"
If I try to edit the document properties I notice that Title (default column unable to be deleted) appears and is both empty and starred for every new document I add. From reading elsewhere, both of these are attributed to documents having a required field at Check In, but if I view the Library Properties none of the Columns are marked as Required. This has made mass Check-Ins impossible (I have a flattened view in each library so users can check in multiple documents simultaneously) and made checking in documents far more cumbersome. I'm wondering if there is another feature/setting I am not considering that may be creating this Check In error, or if this is an issue others have dealt with before.