I try to import a new single pdf file to Dspace 6.3 in Centos 7 after successful backup files from batch import (ZIP), but in xmlui page get several errors:
- When i try import, error after accept license: Error while attempting to create identifier for Item id: 0b85c570-ab76-483a-9cdc-3db7b26716cb
- When i try create new community: ERROR: duplicate key value violates unique constraint "handle_handle_key" Detail: Key (handle)=(123456789/41) already exists.
- When i try create new collection: ERROR: duplicate key value violates unique constraint "handle_handle_key" Detail: Key (handle)=(123456789/42) already exists. How i can fix these problems? Before backup i easily imported new pdf files, but after backup i get these problems