Hi Arthi,
Could you pleae checktwo things.
1 Execute FM RSEQ_QUERY_METADATA for the query and in the table ET_QUERY_VARIABLES for that input parameter wat is the value of var_name and var_name_ext .
2.Also While fetching ResultCollection pleae put the debug point in the method EXECUTE_QUERY of class /IWBEP/CL_ANA_ADP_EQ_API , while calling the FM RSEQ_QUERY_EXECUTE check for I_T_QUERY_VARIABLES what is passed, isn't it var_name for that input parameter.
Thanks & Reagrds,
Mohan