Single API call creating duplicate file versions using Dropbox .Net Api

This looks like the API is creating two commits instead of one. Even though you only call the upload once, Dropbox may register a retry or double commit because of timing or how the SDK handles network responses. That explains why you see two versions a millisecond apart, with one marked “API” and one marked “web.” They are not actually duplicates on disk, just two versions of the same file. To fix it, confirm that your code only calls the upload method once per file, especially at the point where sessions are finished for large uploads. Add logging to ensure there are no retries or parallel calls. If the problem persists, note the request IDs from the API responses and pass them to Dropbox Support so they can trace why two commits are recorded.