How is LRF_WKQU table Updated?

Hi all,

     I'm new to this field. I need to know how is table LRF_WKQU updated. This is because in his table(LRF_WKQU) my user id has got one one screen entry for 16X20 and hence when i try to display any error message i'm getting it in 16X20 screen provided my initial screen is 8X40. I'm not sure whether i've egot the problem correctly or not. If i'm wrong could anyone help me in fixing it and eloborate on the same.

    Helpfull answers will be rewarded.

Thanks and Regards,

Prashanth