Error code 415: Unsupported Media Type can occur when you try and upload a file that is
- Not a PDF file, see What files can I upload to Penneo?
- The size of the PDF you are trying to upload is too big, the recommended file size is 15 MB and the max size is 20 MB.
- The PDF you are trying to upload is password protected, remove the password and try again.
- The PDF file that has been corrupted.
In most cases, this issue can be resolved by printing the PDF, thereby creating a new PDF. To print a PDF, open the PDF, click on the print option and change the printer to Save as PDF, print the file and save it. Try uploading the new PDF to Penneo. If the problem persists, contact customer support here.