Casio V-REGI Series Reference Manual page 77

 Tap <Confirm> to return with information edited on this screen.
 Tap <Return> to cancel this process.
 If Output PDF is success, the following pop-up will appear.
 If Output PDF is failed, the following pop-up will appear.
 There will be the following causes.
Causes
SD is not insert to your machine, but
you set save area to SD.
There are not enough empty area to
save PDF.
Change file name to save.
Tap this area.
Change folder to save.
Tap this area.
Solution
Insert and mount SD.
Delete unnecessary data.
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