In this article you will find information about the errors that can occur when uploading single documents.

This article contains information about the following topics:

If you have write access to a folder, but read access to a document you will not be able to add revisions to that document.

Please create a new document with this revision or upload the revision to a different document.

When a file has a potentially harmful filetype they will not be uploaded.
This is what it can look like when you attempt to upload a harmful filetype:
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The following filtypes which can potentially be harmful are not allowed.