THE FM'S USED IN SESSION METHOD ARE OPEN_GROUP, 
INSERT_GROUP, CLOSE_GROUP.

AT THE PLZ TRY TO CLOSE THE SESSION.

bdc_open_group:
this function module is used to open the session.
parameters related to this function module are 

client:sy-mandt

uname:sy-uname

holddate:sy-datum

group: <groupname>

keep: 'X' / ' '.

2)bdc_insert:this function module is used to insert the
values to the session

parameters related to bdc_insert are

tcode: mention the transaction code

dynprotab: mention the internal table having structure like
                          
            bdcdata.


3)bdc_close_group:

         when ever u open the session it is must to close
the session