What does "Unprocessed" mean in HCM Extract diagnostic log?

Summary:

We have a daily run HCM Extract, it created the data files and send to the third party Payroll system.

One of the Extract run showed the status "Completed with Alerts". I downloaded the diagnostic log, compared it with the good run, the only difference is, it has "Unprocessed :800".

Does anyone know what "Unprocessed" mean??

I attached the screenshot and diagnostic log. Thank you!

Content (required):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):