tape_3590.3f6a17 <bus ID of the tape device>: IOSIM SEV=<SEV>, DEVTYPE=3590/<model>, MC=<message code>, ES=<exception>/<required service action>, REF=0x<refcode1>-0x<refcode2>-0x<refcode3>
Explanation
This is an operating system independent I/O subsystem information message
that was issued by the tape unit. The information in the message is
intended for the IBM customer engineer.
User response
See the documentation for the tape unit for further information.