How to flag any missing documents in a document sets

Question

I was wondering if there is a method to flag out missing documents in a document set. For example, document set 1 has 5 require document and 2 of the documents are missing. Is there a method to flag or highlight the set to indicate the missing documents?

Please advise.

Answer 1

We can create a new Yes/No column "IsMissing" in the document library to flag the documents are missing or not.