Hi Deepak,
MS and NW versions are absolutely different and you can't assume that the functionality existing in MS will be valid in NW.
By the way - running lgx instead of lgf will not bring you any measurable benefits in execution speed.
Vadim
P.S. Skipping validation is only useful with RUNLOGIC_PH badi and multiple script calls - for this badi there is a special parameter VALDATION=ON/OFF