Dear Sanjay
you wrote: for one material / one specification you have the problem; this "indicates" that for a different material/specification it is possible to use DG filling which indicates that same suitable data is missing regarding the specification in question.
If you are able to use DG filling for a different material / specification combinaiton regarding all lists of interest (IATA, ADR etc.) then it seems to be a "data" problem and not a "customzing" problem.
Can you specify the data which is available? Which lists are you using etc. (IATA ..?)?
C.B.