First, select the REF desired. (If only one REF exists in this block, only one will be listed in this window.)
For the REF you selected, the Wizard will list all the associated tables in the database. (Remember that REFs are defined on object types, not on specific tables, and therefore a REF can potentially point to multiple tables.)
From this list of tables, select the particular table you want. The Wizard will build the LOV from the values in this table.
The same LOV gets attached to all the lookup items associated with a particular REF.
The Data Block Wizard only creates an initial LOV for you. It does not maintain it.
If you later make changes to the REF or other data structures that affect the LOV, you should use the LOV Wizard to make any associated changes required in the LOV .
You can also use the LOV Wizard if you want to adjust the format of this initial LOV.
If you later re-enter the Data Block Wizard for this block, and you check the create LOV box, a new LOV will be created. (The old LOV will not be deleted, but the lookup items will be attached to the new LOV.)