When adding OS services to an OS server, you might see an error message stating that you have inconsistent versions of the OS running on the server and the OS that you are trying to add. This error message occurs when the installed version of the OS has packages that were previously patched, and the OS services being added do not have those packages patched, because the patches have been integrated into the packages.
For example, you might have a server that is running the current Solaris release or the Solaris 10 release. You might also have additional OS services loaded on this server, including the Solaris 9 SPARC sun-4m OS services that have been patched. If you try to add the Solaris 8 SPARC sun-4u OS services from a CD-ROM to this server, you could get the following error message:
Error: inconsistent revision, installed package appears to have been patched resulting in it being different than the package on your media. You will need to backout all patches that patch this package before retrying the add OS service option.