Possible reasons you received system reference code A90002000:
- If the system displays this SRC code, it usually means that a console
was not found by i5/OS™.
- The iSeries™ system
value QAUTOCFG must be set to ON. i5/OS is
unable to create the new console device if it is off.
- If you just migrated the console from one type to another and the new
console fails to work in i5/OS you
may need to use another workstation to manually delete the controller and
device description associated with the old console device.
Note: You may be able to use the console service functions (65+21) to
assist in a recovery or to gather debug data.