Line item issue

Hi,

    In alv report output is displayed like this.

plant                     vendor               i/p material                     o/p material               mat.doc             movement type

1000                      00001               abcd                                ---                             55555                    101

1000                      00001                 ---                                  efgh                          55555                    543

here same material document number (for full report 101 and 543 has same doc.number) so user asks

show one line item (with different material )..so 543 line item is to be deleted except o/p material..

Here i want to display like this

plant                     vendor               i/p material                     o/p material               mat.doc             movement type

1000                      00001               abcd                                efgh                         55555                    101

any one suggest???