Diagnosis
In a functional area that works with a table join, you want to link anadditional table or to define an additional field.
Although a table join contains several tables, a sequence of recordswith the same structure is edited, i.e. there is no hierarhicalrelationship between the individual tables. A functional area with atable join is therefore analogous to a functional area where a table isread directly.
All the tables in the join are filled with values at the same time (thetimepoint of record processing). The table in the join to which theadditional table or additional field is assigned is thereforeirrelevant. For technical reasons, the first table is always selected.
Note that in a table join you can always access all the fields of thetables of the join when you formulate a WHERE condition or codingpaths.