What does this mean: "Skipped cannot add anonymous lead to a program"

[Anonymous]

That is the message next to some of the results I see when I click on

Campaign ---

Engaged ---

Results

See attached screen shot.

regards,

Joy Reo

[Anonymous]

Never mind, I just figured out the answer to my question!

Thanks to this link: Understanding Anonymous and Known Leads - Marketo Docs - Product Docs

Joy