are you sure these devices have not been re-purposed and presented to another host ?  symaccess -sid 123 list assignment -dev 1462  if nothing is returned then you will need to first make devices not ready or write disabled  symdev -sid 123 write_disable 1462  and then unmap it  symconfigure -sid 123 -cmd "unmap dev 1462 from dir ALL:ALL;" commit
We have seen following issues on the server, and they are no longer been used, older or stale devices. They are shown in "symdev -sid 123 list", but not in " symaccess -sid 123 show view view_name". they are not in the storage group, but are still mapped, somehow, Please advice what can I do on the sever and/or on the array to get rid of these devices? Thank you!   server_name:   /dev/rhdisk10 :EMC     :SYMMETRIX       :5875     xxxxxx :        2880  IDENTIFIER TIMESTAMP  T C RESOURCE_NAME  DESCRIPTION F31FFAC3   1224120313 I H hdisk10        PATH HAS RECOVERED F31FFAC3   1224120313 I H hdisk10        PATH HAS RECOVERED F31FFAC3   1224120313 I H hdisk10        PATH HAS RECOVERED F31FFAC3   1224120313 I H hdisk10        PATH HAS RECOVERED 02A8BC99   1224120313 P H hdisk10        PATH HAS FAILED 02A8BC99   1224120313 P H hdisk10        PATH HAS FAILED 02A8BC99   1224120313 P H hdisk10        PATH HAS FAILED 02A8BC99   1224120313 P H hdisk10        PATH HAS FAILED
To remove old / stale devices from AIX servers