static convertibility check

Hi ,

Could you tell me while running the UCCHECK transaction ,do i need to check the option :DISPLAY LINES THAT CANNOT BE ANALYZED STATICALLY.

If check the option i am the following error message

The system could not perform a static convertibility check on the current statement, because of untyped or generic operands. It can only carry out this . runtime. at runtime. at runtime. at runtime.)

How to solve this ?

thanks in advance .

I would like reward for useful answers.