Direct update DSO filed is missing in RSINPUT

Hi Experts

   I am facing an issue while maintaining data for Direct Update DSO.

   I create a  Direct Update DSO with some key fields and two data fields , the two data fields are the same type with'CHAR' and the same length with '01'.  Actually , they are flags for different purposes.

when I am trying to maintain data for this DSO in t_code RSINPUT, only one data field presents.

as showing above , field RL000966 is missing in RSINPUT.

I need maintain two flags in one record , please tell me how to do?

Thanks.