I think you’ve found the inventories now. For the below problem, your fuller text shows that your reference has 4:10b. It is that lowercase b which is causing the error flag. That is a verse segment. You should make sure that you have listed the verse segment characters for your publication in the Language Settings. (Project Menu/Project Settings/Language Settings/Other Characters). That may solve the problem. If it does not, I suggest that you deny the flags individually when they are appropriate for that situation until you finish text editing so that the check continues to catch wrong editing. After that, you can change the inventory to make that situation valid.
Of course, if you have many of that type of reference, you may prefer to change the inventory right away, but then make a note to yourself to review them in case an error has crept in. This check is good at catching missing \ft, for example. You should also consider your audience. Our teams can blindly follow a resource which uses segments and not know why they are doing it nor consider that their audience will not understand its usage. If it is to be used, they will have to be taught what it means. I would consider a single instance of this in a NT to be an error (which is also a good usage for this check).
Blessings,