On attempt to assign two Office365 licenses to user at the same time in CCPv2 the following error appears:
Failed to assign the licenses "Office 365 Business Premium", "Exchange Online Advanced Threat Protection" to the user due to the error "Unable to find Offer Ids for the subscriptions ".
Software-related issue #APSA-16787: "Could not assign two licenses to one user in CCPv2".
APSA-16787 has been fixed in Office 365 16.8.3 APS package version. Please contact TAM \ email@example.com to schedule the upgrade.