Need suggestions Reg: File-->RFC

Hi ,

We are trying to do File(CSV Based)-->RFC !

Now we are facing some problems with message mapping!

the input file coming like this:(each row having 32 fields)ex:

,jjjj,kkkkk,0812345,,

hhhhh,,sdsa,oooo,,

ewtre,,,fgf,908978

and top row having header and line items...!The 2nd & 3rd rows only are line items..!

when i am doing mapping i need to aviod line item field mapping which commonly exist in 1st row ...!it means there is common line item fields are exist in 1st ,2nd and 3rd rows. If i done mapping between soruce field to target line item fields...the xml payload writing another line item tags from first row which commonly exist in 1st row. Now i want aviod line time field mapping which commonly exist 1st row.

Hope i am not confused...

Please give me your ideas about this..

Thanks,

Sankar