Diagnosis
A unique index is contained within the table. Since SID entries for thedimension (or for line-item dimensions in the fact table) have beenchanged during conversion, conversion may fail at a duplicate key.
Unique indexes usually occur only with APO systems and they areimportant there to avoid multiplication of changes, where changes areadded to several identical records.

Procedure
Delete the unique index and then restart the conversion. (Do not run aschedule during this time).
You can reconstruct the unique index after conversion. If thereconstruction fails, you can remove the duplicates that led to thefailure of the index construction in transaction RSRV and then deletethe dimension entries which are no longer used. It is then possible toreconstruct the index.
You can also continue with the conversion, despite this warning.However, the conversion may fail because of a duplicate key. If this isthe case, proceed as described above.