Hello Suresh,
The screen throws an error because it found an unsupported character in its Message Name Field.
If you remove "/" from the name, it would get saved. "/" i believe is not allowed in the name
However, you could use *SCWM*WMTOID01 or *WMTOID01 in the Message Name field. Remember that *WMTOID01would mean all message ending with WMTOID01.
Regards,
Tufale Ashai.