Alv Problem: Dynamic Header & Dynamic item

Question

Dear all,
i have two internal table.
one for header and one for item.
in header table record is stored like this: (In Vertical Base)
ID   Description
L1   Level1
L2   Level2
L3   Level3
L4   Level4
ALV Displayed like this:
Level1       Level2          Level3           Level4
in item table record is stored like this: (in Horizental Base)
L1     L2     L3    L4
20     30    40     50
21     31    41     51
22     32    42     52
23     33    43     53
the question is that how can i display items data on the base of Header.
thanx in advance
Anshuman

Answer 1

It looks to me that you already have all your item data in an internal table. Pass this table to your ALV (FM or OOP). Based on your header data, feed the Fieldcatalog with this data, and you're done.