IEE935I

Explanation
text is one of the following: DEVICE TYPE xx NOT SUPPORTED
SCREEN SIZE NOT SUPPORTED:[rrrXccc|rrr]
MODE:yy

During system initialization or in response to a command,
multiple console support (MCS) cannot make a console active because
of an error.
In the message text: consname
The console name.
DEVICE TYPE ‘xx’ NOT SUPPORTED
The specified device type is not supported. This is probably a
software error. In the message text: xx
The internal device-type code.

SCREEN SIZE NOT SUPPORTED:rrrXccc MODE:yy
The system does not support the screen size for the specified
device. rrr
The number of rows on the screen.
ccc
The number of columns
yy
The device mode, as follows: yy
Meaning
01
The device supports the 3270 extended data stream.
02
The device does not support the 3270 extended data stream.

System action
The system marks this console as unusable.

Operator response
If the device is a 3290 Information Panel
that has had its logical screen size modified, change the logical
screen size to one of the values supported for operator consoles.
You can find the Maximum and
default specifications for AREA and SEG in z/OS MVS Initialization and Tuning Reference. 

Source
Communications task (COMMTASK)

Module
IEECVFTV, IEECVFTU

Routing code
2,10

Descriptor code
4