Behavior:
If in a file cabinet in DocuWare 4 mode the "Several documents with matching entry not permitted" option has been enabled for a database field, despite the existence of documents with the same field entry (e.g. because the option was set retrospectively), you will not be able to set the "unique" option in the converted file cabinet in DocuWare 5 mode.
Solution:
In DocuWare 4 the check for an existing index entry was carried out by the client when storing a new document. You could therefore enable the "Several documents with matching entry not allowed" option retrospectively, even though the field already contained index entries that had been used more than once.
In DocuWare 5 the check for an existing index entry is made by the database, since this is considerably quicker. If index entries have been used more than once in this field in the database, you will not be able to set the "unique" option.
