Field help (SSPKEYPAE)

Concerning the first level support, the parent level is always known by the system. This information is therefore always assigned by default with the name of the field representing the primary key in the target table.

In the case of a grouping support, this field is used to indicate that the field in the parent table that contains the value corresponding to the equivalent field in the inferior level table. The user can select this field from the list of fields that compose the table.