Hi Eddy, The code produced by you in the first post differs from the the second post, so it's not that helpful to understand the purpose you want to achieve. Secondly, you are retrieving data from table /BIC/B0001257000, so first check if you have data there or not. If there is data, then see if it's filled in internal table LT_MAR1 or not.
At last, you can see if after your statement
LOOP AT lt_mar1 INTO ls_mar1.
if LS_MAR1 has data or not, which you are trying to check in debugging. Best Regards.