Same Item Rule
For writable tables, no two columns may be defined on the same item or on overlapping items within the same record type.
Relativity prohibits this situation because the information written would not be the same information retrieved on a subsequent
read. Consider if you had two columns defined on PF-PRICE-PER-UNIT. A value of 12.95 was placed in one column, and 13.95 in
the other column. This row was then inserted into a table. If you were to immediately read that same row, there would be no
way to return 12.95 and 13.95 to the columns, since only one COBOL record was written.
Note: In the table definition editor, multiple columns can be defined on the same data item when
Allow Duplicates is selected.
