> ## Documentation Index
> Fetch the complete documentation index at: https://signatureapi-daf4ee54.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Cannot Parse Document

> Error

## What Happened

The document or template downloaded from the document resource's URL is not a valid PDF or DOCX file.

<Tip>The response includes a `detail` property with more information about this error.</Tip>

## How to Fix

* Verify that the URL points to an actual PDF or DOCX file. The URL may be returning an HTML error page or redirect instead of the file content.
* If you used the [Uploads](/docs/api/resources/uploads/object) resource, ensure the file was uploaded as binary with the correct `Content-Type` header (`application/pdf` or `application/vnd.openxmlformats-officedocument.wordprocessingml.document`).
* Download the file from the URL and verify it opens correctly in Adobe Acrobat Reader (for PDFs) or Microsoft Word (for DOCX).
* If the DOCX file was created with software other than Microsoft Word (like Google Docs or LibreOffice), open it in Microsoft Word and save it again. This resolves most compatibility issues.

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