We’ve found some EAST retained material that have accompanying media (floppy discs / CD-ROMs). Are we required to keep the media? If the media is missing, should we request reallocation of the material to another library?

We’ve found some EAST retained material that have accompanying media (floppy discs / CD-ROMs). Are we required to keep the media? If the media is missing, should we request reallocation of the material to another library?