The Ownership Alignment Tool (OAT) is not performing group synchronization.
The local groups do not match the exact Active Directory (AD) group names.
Change the name(s) of the AD group(s) to match the local group name(s).
The Ownership Alignment Tool (OAT) is used to change the ownership of files and directories on Unix hosts to reflect the UID and GID in Active Directory, allowing you to maintain user/group information exclusively in AD.
For more information on OAT and its usage please refer to the man pages that describe each of the utilities it is composed of.