need to sort alv data, but the entries are like header and item
means first line is of header data and if has items then
the items will be displayed starting from second line but some columns for all items
will be empty (means header data at the top line refers)
now second header data comes and then its items.
in such case how to sort the ALV basing on the header number.
while sorting all the items are going at the bottom since it has no header number in its line
and header items are coming at the top
how to sort these entries correctly