Is it possible to only save K2 form as PDF without saving server?
Because the PDF is confidential and would not want to save in server.
I think it has to save via a smart object or advanced smart object so through or in the K2 server. Perhaps store the data in your database and restrict access to other users, eg. create a sql service instance and create a stored procedure to save your PDF documents, then in SQL, restrick users so that they cannot access the databse/table/server.