I have recently installed a number of wireless and ethernet terminals in our building which are working well - 99% of the time! Sometimes, though not always, when the device is being varied off (manually or because System Value QMAXSGNACN is set to '3' (Disable device and profile)) the originating job (operator workstation or QINTER) completes the instruction ok however job QTVDEVICE in subsystem QSYSWRK attempts to vary off also, finds the device already varied off and deletes the device description. Has anyone else encountered similar problems? Is there a solution? Any help will be greatly appreciated.