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Avalara Help Center

Why am I receiving the following "Error uploading stack. PDF is unreadable, empty, or in an invalid format" when uploading a certificate?

Overview

You want to know why you are receiving the following error " Error uploading stack. PDF is unreadable, empty, or in an invalid format" when uploading a certificate.

Environment

Avalara CertCapture

Resolution

  • This occurs when the PDF file includes data our system is unable to upload, typically the file is corrupted, it has a security feature, password protection, or an electronic signature certificate. 
  • There are two ways to remove this data from the PDF file:
    • Print the PDF > Scan > Save in a PDF format > Upload the new file OR
    • Save the PDF file as a .jpg  > Save it as a PDF > the new file will include only the image so it will be possible to upload
    • Occasionally this still gives an error. There are other reasons that can happen such as:-
    • The PDF can have no fillable fields
    • The PDF can have no highlights, notes, etc
    • The PDF may be corrupt
    • There could be another program using the PDF such as the PDF reader.