Никак не могу заставить его сработать.

Информации никакой не нашел по нему

Definition

This Customer-Exit allows you to use enhancements to table PLKO (task
list header data) in search helps for task lists.

Use

If you have added fields to table PLKO and you want to integrate them in
the task list search help, you use this Customer-Exit to do so. This
exit is included in search help report RIPLKO10 and it generates a
branch from the report. In this exit you can call your own search help
report in which you can consider the extra PLKO fields.

Parameter

E_EXIT

If E_EXIT has an X after executing the exit, the orignal report RIPLKO10
is no longer processed. You must set this parameter if you have called
your own report and selected data.

T_SELTAB

All selection screen fields of report RIPLKO10 and the standard values
set by the calling program are transmitted in this table.

Спасибо. Ноту посмотрел, насколько понял надо устанавливать какой-то патч. Вообщем пока оставил эту затею, влепил кнопку в gos-контейнер.