Dynamic deep internal table field symbol

Hi ,

I have a dynamic deep internal table field symbol, for example

<lfs_data>

Header 1 Header 2 Header 3 Header 4 employee id employee no xx Internal table[] employee id employee no yy Internal table[]

How to read internal table from the field symbol ? means header 4 .

I tried to loop <lfs_data>, but I am getting dump.

field symbol : <fs> type any table.

loop <lfs_data> assigning <fs>. "getting dump here"

endloop.

Regards,

K.Pradeep.