MSExchangeSA Event ID 9327 when updating OAB

Hi!

When forcing updating Offline address book: Get-OfflineAddressBook | Update-OfflineAddressBook

I should see events: MSExchangeSA Event ID 9343 - when update starts and MSExchangeSA Event ID 9107 - when update finishes, am I right?

But instead of this, I am gettin:

Log Name:      Application
Source:        MSExchangeSA
Event ID:      9327

OALGen skipped some entries in the offline address list '\Global Address List'.  To see which entries are affected, event logging for the OAL Generator must be set to at least medium.

How can I set logging for the OAL? Is it updating the rest of the address list?

Thankyou in advance.