The Allocate Error State

An allocatable device is in the allocate error state if it is owned by user bin and group bin with a device-special file mode of 0100. If a user wants to allocate a device that is in the allocate error state, you should try to force the deallocation of the device, by using the deallocate command with the -F option. Or, you can use allocate -U to assign the device to the user, then investigate any error messages that appear. After any problems with the device are corrected, you must rerun the deallocate -F or allocate -F command to clear the allocate error state from the device.