CBR3454I Invalid logical unit number sent to drive drive-name.
Explanation
This is a microcode programming error. Logical unit number (LUN) 2 through 7 is specified or the specified LUN does not respond to the selection from the controller unit in drive drive-name.
System action
The I/O operation is stopped.
Operator response
Notify the service representative.
System programmer response
If the problem recurs and if the program is not in error, search problem reporting databases for a fix for the problem. If no fix exists, contact the IBM® Support Center. If the sense data displayed in the previous CBR3300I message does not equal zero then obtain the SYS1.LOGREC error record.
Source
Object Access Method (OAM)
Routing Code
2,4,6
Descriptor Code
4