Filling all DSO registers with activating

Hi lads,

For sure you know how to do in the following problem.

I have a DSO which receives data from two PSAs.  DSO has two keys which are Doc.Numb and Position

From first PSA, I receive data from header and positions, and so many registers as header + positions there are.

Doc.Num (key)     Position (key)   Value     Approver    

10000                   #                         #                   

10000                   1                         10

10000                   2                         20       

From second PSA, I receive just "approver" data and Doc. Num, a single register per Doc.Numb. For example:

Doc.Num (key)     Position (key)     Value     Approver

10000                                                          zzzzzz

When loading and activating, approver is just filled in header line.

Doc.Num (key)     Position (key)   Value     Approver    

10000                   #                         #         zzzzzzz     

10000                   1                         10

10000                   2                         20       

What I need is that Approver is filled in all registers, both header and positions.  I know that this can be make with an easy End-routine, the problem is that I don't have Abap knowledge.

Do you have an example of the code I should put?

Thanks in advance