Oracle Message RMAN-06408 - recovery catalog upgraded to version string

ERRORrecovery catalog upgraded to version string
CAUSEThis is an informational message issued by the UPGRADE CATALOG command. It indicates the version of the recovery catalog schema to which the recovery catalog was just upgraded. Note that this version number may not reflect the version number of your rman executable or target database, because the recovery catalog schema is not changed with each Oracle release.
ACTIONNo action is required.