Hi Chandan ,
Database fetch is case sensitive ,So u need to give exact format in where condition.
Make your parameter and database in same case so that you need not worry about case sensitivity .
Check the lowecase check box in the domain .
Then declare your parameter
PARAMETERS: | P_Mita | TYPE ZLT_Mita-M1 LOWER CASE . |
You can do the vice versa also by unchecking lowercase and giving Upper case instead of lower in parameter declartion .
Regards ,
Juneed Manha