Dear Martin,
Thanx for reply .
I am trying to use this FM HRHAP_DOCUMENT_GET_LIST .
I am not getting output . 
I have given appraisee id, appraiser id , plan version, s_and_or, s_sel_status, s_sel_dates ...
But I am not getting output ( Appraisal ID), Please let me know what i am missing .
Regards,
Pran