Airlock IAM 8.0 is a major release and it introduces breaking changes to the DB schema.
For all minor releases of IAM 7.x, changes to the DB schema were introduced as optional. Only customers that wanted to use new features that depended on DB schema changes were required to adopt those changes.
With IAM 8.0, all the optional changes of previous minor versions are becoming mandatory to align all customer DB schema. If IAM 8.0 is run against a database that is not fully up to date, IAM will either not start correctly or run into errors during operation.