Maintain the system Message:

Hi Gurus

I am getting warning message  " The Batch does not exist in plant XXXX" - Message no. VL200 , while doing the Goods Issue against outbound delivery, when i am doing the goods issue with batch number [the batch number doesn't exists], when i do the PGI the batch number is saved,

Here we want the warning message to  be error message, How do i maintain this.

Application area is VL - message number: 200

I tried to do this at  Logistics Execution -->shipping-->system modifications-->Specify characteristics for system messages--> Define the message types of system messages, Here i am unable to find this message for this application area,

Please help me

thanks

amar