Hello Sandeep,
Just be aware that you can use the -B parameter or the -g and -a parameters combined but cannot use all three of them together. If you specify the -B parameter, you identify the application group name and the application name as parts of the filename.
I've been playing with that a few month ago (well nearly one year!) and it was really confusing, and in the documentation of CMOD 8.5 they are more explicit about this point.
The only thing I don't remember is, if you can put several indexes. like:
arsload -b field1 -b field2 -b field3 -B "APP.AG.IDX.IDX.IDX.YY.MM.EXT" -u user -p password -vfn <file>
Could be interesting to try it.
Cheers,
Alessandro