This is used to modify the metadata associated with a file attachment.
File attachments
public String ucUploadDeleteObject ( SesameSession session, Connection dbconn, String uploadObjectType, Object uploadObject ) throws Exception ;
The user custom exit ucDeleteAttachment is not invoked with cloud upload objects.
The string returned by these methods is an error message that will alert the user in the edit/delete screen; null for successful transaction.
For more information, please see here.