...
\uD83C\uDF31 Solution
From release 22.2 on, a there is limited support for group managed service account accounts (gMSA) in PeopleSync. They can only be used only for the account running the PeopleSync service.
...
After setup has completed, verify in the Services snap-in on the Backend Server that the PeopleSync Service is running and that it is using the gMSA specified.
| Info |
|---|
As an alternative installation method, you can install using use a regular account during installation and then later switch to a gMSA after installation in the Services snap-in. In this case, you need to grant data_reader and data_writer permissions for the gMSA in the SQL Server database. |
...