Hi Pavan,
Please try adding below selection in exporting while calling FM
i_save_in_table = rs_c_false
i_save_in_file = rs_c_false
Also please check if the technical names of characteristics and Key figures you are passing are correct.
It should work.
If not, please try to debug it and see what value SY-SUBRC is returning.
corresponding exception part of FM will give you an idea what table values you are not passing correctly.
Still if have issue then seek help from below links
http://www.web-dreamer.de/blog/2009/04/reading-on-sap-bi-infocubes-via-rsdri_infoprov_read.html
Hope it helps.
GS
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Regards,
Gaurav