The document could not be saved. A number is out of range

Hey there John From RI,

Thanks for reaching out to Apple Support Communities. I understand you’re not able to save a PDF on your Mac. I’ll be happy to help with this.

First, make sure you’re using the steps from the following link to save your document as a PDF on your Mac:

Save a document as a PDF on Mac

Also, make sure your permissions are set correctly. This can affect saving files:

Resolve issues caused by changing the permissions of items in your home folder

If you’re following those steps, and still running into this issue, boot into safe mode and see if you can save your PDF without any issues there:

Use safe mode to isolate issues with your Mac

If the issue continues after that, please let us know what application are you using to save your PDF documents. 

Best wishes.