Any way to detect duplicate documents?

Yes, you can select "Show duplicates only" on the Files tab when defining the filter: How to find duplicate file content in a vault

Thanks Joonas Linkola !!

Thanks Joonas Linkola !!

Hello Joonas Linkola - as a follow-up to this: is there a way to prevent users from creating duplicate files on the system?
I know a window pops-up  that informs users to the fact that a duplicate exists - but despite this some users are repeatedly uploading the same documents.

There's no built-in configuration option for this. Keep in mind that there can be legitimate reasons to upload the same file into the vault multiple times: these documents may have different metadata, workflow and permissions. Duplicate detection only checks the file contents and gives a warning about the existing duplicate files. The decision whether to create the document ultimately lies with the user.

If you can identify the document uniqueness by its metadata (for instance, there's a unique identifier such as invoice number) then you can use the Unique Object Enforcement module of Compliance Kit to prevent the creation of metadata duplicates.