Unit Conversion in Bex


I am trying to convert all the units to KG. but it is showing the below message

--> quantity unit of measure have different dimensions --no calculation

The settings which i have used in RSUOM

1. in conversion factors Tab i selected " using central units of measure (T006)"

2. Unit of Meas. Tab for TARGET UNIT OF MEASURE.....selected radio button as Fixed unit of measure "KG"

Help me..how to bring all the units into KG