When trying to restore the Librarian master file, receive the following error:
*** ERROR *** MASTER FILE CAN NOT BE RESTORED BECAUSE IT HAS BEEN ACCESSED SINCE ITS INITIALIZATION
CA Librarian has safeguards against inadvertantly reformatting (and thereby destroying the content of) existing Librarian master files.
Release : z/OS 4.4 z/VSE 4.1
Component : CA Librarian
The Master file must first be initialized before a RESTORE can be done.