＊Postinstall secret key was replaced based on different Secret PIT.
＊This error occurs when you run Identity Service PostInstall on existing database twice
＊Postinstall should be executed on empty database just only once. Unique Secret PIT and PostInstall Secret key were generated.
＊V22.8 installer runs this Postinstall even though upgrading
＊We have to manually fix this Postinstall Secret key.
＊This is because we should not allow anyone to change Secret Key. If Postinstall program automatically changes the exisiting database, it will be a security breach.
<Measurement>*From next release (V22.9), If the installer finds existing Secret PIT, it doesn't run PostInstall.