I get a message that says “ATP Maintenance SB not licensed for this model”. What does it mean?

I get a message that says “ATP Maintenance SB not licensed for this model”. What does it mean?

Frequently Asked Questions: 

The compliance record pulls in ADs and SB for each item in your profile based on the libraries you purchase. You can add any component to your profile, regardless of the data you subscribe to. If you select a component that is not covered by your subscription(s) we message you. The “Maintenance SB” message indicates that you do not have a Maintenance Library for that component (complete SB collections are an element of the Maintenance Libraries)