Exchange 2010 Enterprise CAL

Hi have two exchange 2010 SP3 server with 3 roles each one, MBX, CAS y HUB, and a DAG is configured.

I have applied a retention policy to that delete inbox, deleted items y sent items message after 14 days (all users download message to PST), this policy is applied to 600 maibox users, I have 650 mailbox users.

I´m running Microsoft Assessment and Planning Toolkit to get Exchange licensing, however the scan result is 66 mailbox users required CAL Enterprise, in the column journaling appear 66 mailbox, I don have journaling enable.

Nobody knows what does it mean?

Thanks