Calling the Upload method will process all the documents added via the AddDocToForms method by doing the following:

1. Verify that the FormViewRequestUNID has not expired (is not older than 10 days) otherwise an error is returned.
2. Add each file as a record to the Quik! server.
3. Upload and encrypt each document in the Quik! file storage location.

If any errors occur, the Quik! software will return detailed error messages in the error object and an appropriate error code to indicate if a file could not be read, failed to upload, etc.