Data retrieval problem - Urgent!!!

Hi all,

Have a very queer problem.I have a program which queries data from a Z table. The problem is that it does not work for some entries of the ztable. The user enters 4 details in the sel-screen and all these 4 are used for the query.

Some entries when queried through the program gives me sy-subrc 4 even though all input values are correct ( please donot reply suggesting me to check my inputs).

I separately queried using the same values in se16 and the record is fetched.but it doesnot happen in through the program.

Any idea guys..if you have faced such problems before.??