UJQ_RUN_RSDRI_QUERY: how to define the scope?

Hi,

I'm going to use UJQ_RUN_RSDRI_QUERY in a BADI in order to retrieve data from another application. It seems easy to use. But how to define the scope of the retrieved data, i.e. how to define the content of the it_sel parameter.

thanks for your help,

Romuald