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    <title>topic Re: 409 error while revision download in Dropbox API Support &amp; Feedback</title>
    <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/409-error-while-revision-download/m-p/281216#M17196</link>
    <description>&lt;P&gt;The version of the file you're trying to download is from 2017-04-17. Note that &lt;A href="https://www.dropbox.com/help/security/data-retention-policy" target="_self"&gt;Dropbox only retains old versions of files for a limited amount of time&lt;/A&gt;, depending on the account type. This error is indicating that this version is no longer available.&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;By the way, I removed it from your post, but for the sake of security, you should disable that access token, since you posted it publicly. You can do so by revoking access to the app entirely, if the access token is for your account, here:&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;A href="https://www.dropbox.com/account/connected_apps" target="_blank"&gt;https://www.dropbox.com/account/connected_apps&lt;/A&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Or, you can disable just this access token using the API:&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;A href="https://www.dropbox.com/developers/documentation/http/documentation#auth-token-revoke" target="_blank"&gt;https://www.dropbox.com/developers/documentation/http/documentation#auth-token-revoke&lt;/A&gt;&lt;/P&gt;</description>
    <pubDate>Wed, 20 Jun 2018 17:54:28 GMT</pubDate>
    <dc:creator>Greg-DB</dc:creator>
    <dc:date>2018-06-20T17:54:28Z</dc:date>
    <item>
      <title>409 error while revision download</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/409-error-while-revision-download/m-p/280981#M17129</link>
      <description>&lt;P&gt;The 3rd revision of a file got 409 error while trying to download. The 2 previous revision was downloaded successfully&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;------ query for versions -------------------------------&lt;BR /&gt;POST &lt;A href="https://api.dropboxapi.com/2/files/list_revisions" target="_blank" rel="noopener"&gt;https://api.dropboxapi.com/2/files/list_revisions&lt;/A&gt; HTTP/1.1&lt;BR /&gt;Authorization: Bearer&amp;nbsp;&amp;lt;ACCESS_TOKEN&amp;gt;&lt;BR /&gt;User-Agent: OfficialDropboxDotNetSDKv2/4.0.0.0&lt;BR /&gt;Content-Type: application/json; charset=utf-8&lt;BR /&gt;Host: api.dropboxapi.com&lt;BR /&gt;Content-Length: 94&lt;BR /&gt;Expect: 100-continue&lt;/P&gt;
&lt;P&gt;{"path":"/HTK Scanning Project/a berne/Attached/DIAZDE1.pdf","mode":{".tag":"id"},"limit":100}&lt;BR /&gt;HTTP/1.1 200 OK&lt;BR /&gt;Server: nginx&lt;BR /&gt;Date: Tue, 19 Jun 2018 09:22:52 GMT&lt;BR /&gt;Content-Type: application/json&lt;BR /&gt;Connection: keep-alive&lt;BR /&gt;Vary: Accept-Encoding&lt;BR /&gt;Vary: Accept-Encoding&lt;BR /&gt;Cache-Control: no-cache&lt;BR /&gt;Pragma: no-cache&lt;BR /&gt;X-Content-Type-Options: nosniff&lt;BR /&gt;X-Dropbox-Request-Id: 5bac1abe8b59cea5f86318e9c6a230ef&lt;BR /&gt;X-Frame-Options: SAMEORIGIN&lt;BR /&gt;X-Server-Response-Time: 228&lt;BR /&gt;Content-Length: 1577&lt;/P&gt;
&lt;P&gt;{&lt;BR /&gt;"is_deleted": false,&lt;BR /&gt;"entries": [{&lt;BR /&gt;"name": "DIAZDE1.pdf",&lt;BR /&gt;"path_lower": "/htk scanning project/a berne/attached/diazde1.pdf",&lt;BR /&gt;"path_display": "/HTK Scanning Project/a berne/Attached/DIAZDE1.pdf",&lt;BR /&gt;"parent_shared_folder_id": "1460560396",&lt;BR /&gt;"id": "id:iLoTmHG3HyAAAAAAAAAFzQ",&lt;BR /&gt;"client_modified": "2017-04-05T19:46:32Z",&lt;BR /&gt;"server_modified": "2017-05-02T23:03:04Z",&lt;BR /&gt;"rev": "81a570e620c",&lt;BR /&gt;"size": 3161153,&lt;BR /&gt;"sharing_info": {&lt;BR /&gt;"read_only": false,&lt;BR /&gt;"parent_shared_folder_id": "1460560396",&lt;BR /&gt;"modified_by": "dbid:AAC2lY_1pMs_g1IvZRXeXljwOyXccyktbrA"&lt;BR /&gt;},&lt;BR /&gt;"content_hash": "b6995ed1695420965f262d0cd73a8147b9101d9305e7d93ba56ace0b876ff68b"&lt;BR /&gt;},&lt;BR /&gt;{&lt;BR /&gt;"name": "DIAZDE1.pdf",&lt;BR /&gt;"path_lower": "/htk scanning project/a berne/diazde1.pdf",&lt;BR /&gt;"path_display": "/HTK Scanning Project/a berne/DIAZDE1.pdf",&lt;BR /&gt;"parent_shared_folder_id": "1460560396",&lt;BR /&gt;"id": "id:iLoTmHG3HyAAAAAAAAAFzQ",&lt;BR /&gt;"client_modified": "2017-04-05T19:46:32Z",&lt;BR /&gt;"server_modified": "2017-04-26T19:25:12Z",&lt;BR /&gt;"rev": "262570e620c",&lt;BR /&gt;"size": 3161153,&lt;BR /&gt;"sharing_info": {&lt;BR /&gt;"read_only": false,&lt;BR /&gt;"parent_shared_folder_id": "1460560396",&lt;BR /&gt;"modified_by": "dbid:AAC2lY_1pMs_g1IvZRXeXljwOyXccyktbrA"&lt;BR /&gt;},&lt;BR /&gt;"content_hash": "b6995ed1695420965f262d0cd73a8147b9101d9305e7d93ba56ace0b876ff68b"&lt;BR /&gt;},&lt;BR /&gt;{&lt;BR /&gt;"name": "DIAZDE1.pdf",&lt;BR /&gt;"path_lower": "/htk scanning project/a berne/diazde1.pdf",&lt;BR /&gt;"path_display": "/htk scanning project/a berne/DIAZDE1.pdf",&lt;BR /&gt;"id": "id:iLoTmHG3HyAAAAAAAAAFzQ",&lt;BR /&gt;"client_modified": "2017-04-05T19:46:32Z",&lt;BR /&gt;"server_modified": "2017-04-17T13:33:54Z",&lt;BR /&gt;"rev": "92f4133c6d4",&lt;BR /&gt;"size": 3161153,&lt;BR /&gt;"content_hash": "b6995ed1695420965f262d0cd73a8147b9101d9305e7d93ba56ace0b876ff68b"&lt;BR /&gt;}]&lt;BR /&gt;}&lt;/P&gt;
&lt;P&gt;---- download version 1 OK ---------------------------------&lt;/P&gt;
&lt;P&gt;POST &lt;A href="https://content.dropboxapi.com/2/files/download" target="_blank" rel="noopener"&gt;https://content.dropboxapi.com/2/files/download&lt;/A&gt; HTTP/1.1&lt;BR /&gt;Authorization: Bearer&amp;nbsp;&amp;lt;ACCESS_TOKEN&amp;gt;&lt;BR /&gt;User-Agent: OfficialDropboxDotNetSDKv2/4.0.0.0&lt;BR /&gt;Dropbox-API-Arg: {"path":"/HTK Scanning Project/a berne/Attached/DIAZDE1.pdf","rev":"81a570e620c"}&lt;BR /&gt;Host: content.dropboxapi.com&lt;BR /&gt;Content-Length: 0&lt;/P&gt;
&lt;P&gt;&lt;BR /&gt;HTTP/1.1 200 OK&lt;BR /&gt;Server: nginx&lt;BR /&gt;Date: Tue, 19 Jun 2018 09:24:39 GMT&lt;BR /&gt;Content-Type: application/octet-stream&lt;BR /&gt;Content-Length: 3161153&lt;BR /&gt;Connection: keep-alive&lt;BR /&gt;accept-ranges: bytes&lt;BR /&gt;etag: W/"81a570e620c"&lt;BR /&gt;pragma: no-cache&lt;BR /&gt;cache-control: no-cache&lt;BR /&gt;original-content-length: 3161153&lt;BR /&gt;dropbox-api-result: {"name": "DIAZDE1.pdf", "path_lower": "/htk scanning project/a berne/attached/diazde1.pdf", "path_display": "/HTK Scanning Project/a berne/Attached/DIAZDE1.pdf", "parent_shared_folder_id": "1460560396", "id": "id:iLoTmHG3HyAAAAAAAAAFzQ", "client_modified": "2017-04-05T19:46:32Z", "server_modified": "2017-05-02T23:03:04Z", "rev": "81a570e620c", "size": 3161153, "sharing_info": {"read_only": false, "parent_shared_folder_id": "1460560396", "modified_by": "dbid:AAC2lY_1pMs_g1IvZRXeXljwOyXccyktbrA"}, "content_hash": "b6995ed1695420965f262d0cd73a8147b9101d9305e7d93ba56ace0b876ff68b"}&lt;BR /&gt;X-Server-Response-Time: 698&lt;BR /&gt;X-Dropbox-Request-Id: 637e033cd8ede6b46d3286de470753b4&lt;BR /&gt;X-Robots-Tag: noindex, nofollow, noimageindex&lt;/P&gt;
&lt;P&gt;%PDF-1.4&lt;BR /&gt;%�����&lt;BR /&gt;1 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /Type /Catalog&lt;BR /&gt;/Pages 2 0 R&lt;BR /&gt;&amp;gt;&amp;gt;&lt;BR /&gt;endobj&lt;/P&gt;
&lt;P&gt;2 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /Type /Pages&lt;BR /&gt;/Kids [4 0 R 9 0 R 13 0 R 17 0 R 21 0 R 25 0 R 29 0 R 33 0 R 37 0 R 41 0 R 45 0 R 50 0 R 54 0 R 58 0 R 62 0 R 66 0 R 70 0 R 74 0 R 78 0 R 82 0 R 86 0 R 91 0 R 95 0 R 99 0 R 103 0 R 107 0 R 111 0 R 115 0 R 119 0 R 123 0 R 127 0 R 132 0 R 136 0 R 140 0 R 144 0 R 148 0 R 152 0 R 156 0 R 160 0 R 164 0 R 168 0 R 173 0 R 177 0 R 181 0 R 185 0 R]&lt;BR /&gt;/Count 45&lt;BR /&gt;&amp;gt;&amp;gt;&lt;BR /&gt;endobj&lt;/P&gt;
&lt;P&gt;3 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /ProcSet [/PDF /Text /ImageB /ImageC /ImageI]&lt;BR /&gt;/XObject &amp;lt;&amp;lt; /XIPLAYER0 6 0 R&lt;BR /&gt;&amp;gt;&amp;gt;&lt;/P&gt;
&lt;P&gt;&amp;gt;&amp;gt;&lt;BR /&gt;endobj&lt;/P&gt;
&lt;P&gt;4 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /Type /Page&lt;BR /&gt;/Parent 2 0 R&lt;BR /&gt;/Resources 3 0 R&lt;BR /&gt;/MediaBox [0 0 596 842]&lt;BR /&gt;/Contents 5 0 R&lt;BR /&gt;&amp;gt;&amp;gt;&lt;BR /&gt;endobj&lt;/P&gt;
&lt;P&gt;5 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /Length 72&lt;BR /&gt;/Filter /FlateDecode&lt;BR /&gt;&amp;gt;&amp;gt;&lt;/P&gt;
&lt;P&gt;stream&lt;BR /&gt;x�SPPP(�R&lt;/P&gt;
&lt;P&gt;---- download version 2 OK ------------------------------------------&lt;/P&gt;
&lt;P&gt;POST &lt;A href="https://content.dropboxapi.com/2/files/download" target="_blank" rel="noopener"&gt;https://content.dropboxapi.com/2/files/download&lt;/A&gt; HTTP/1.1&lt;BR /&gt;Authorization: Bearer&amp;nbsp;&amp;lt;ACCESS_TOKEN&amp;gt;&lt;BR /&gt;User-Agent: OfficialDropboxDotNetSDKv2/4.0.0.0&lt;BR /&gt;Dropbox-API-Arg: {"path":"/HTK Scanning Project/a berne/Attached/DIAZDE1.pdf","rev":"262570e620c"}&lt;BR /&gt;Host: content.dropboxapi.com&lt;BR /&gt;Content-Length: 0&lt;/P&gt;
&lt;P&gt;&lt;BR /&gt;HTTP/1.1 200 OK&lt;BR /&gt;Server: nginx&lt;BR /&gt;Date: Tue, 19 Jun 2018 09:24:44 GMT&lt;BR /&gt;Content-Type: application/octet-stream&lt;BR /&gt;Content-Length: 3161153&lt;BR /&gt;Connection: keep-alive&lt;BR /&gt;accept-ranges: bytes&lt;BR /&gt;etag: W/"262570e620c"&lt;BR /&gt;pragma: no-cache&lt;BR /&gt;cache-control: no-cache&lt;BR /&gt;original-content-length: 3161153&lt;BR /&gt;dropbox-api-result: {"name": "DIAZDE1.pdf", "path_lower": "/htk scanning project/a berne/diazde1.pdf", "path_display": "/HTK Scanning Project/a berne/DIAZDE1.pdf", "parent_shared_folder_id": "1460560396", "id": "id:iLoTmHG3HyAAAAAAAAAFzQ", "client_modified": "2017-04-05T19:46:32Z", "server_modified": "2017-04-26T19:25:12Z", "rev": "262570e620c", "size": 3161153, "sharing_info": {"read_only": false, "parent_shared_folder_id": "1460560396", "modified_by": "dbid:AAC2lY_1pMs_g1IvZRXeXljwOyXccyktbrA"}, "content_hash": "b6995ed1695420965f262d0cd73a8147b9101d9305e7d93ba56ace0b876ff68b"}&lt;BR /&gt;X-Server-Response-Time: 495&lt;BR /&gt;X-Dropbox-Request-Id: 4aac4e3cecf3f2eaeb91a7cf92f35d0b&lt;BR /&gt;X-Robots-Tag: noindex, nofollow, noimageindex&lt;/P&gt;
&lt;P&gt;%PDF-1.4&lt;BR /&gt;%�����&lt;BR /&gt;1 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /Type /Catalog&lt;BR /&gt;/Pages 2 0 R&lt;BR /&gt;&amp;gt;&amp;gt;&lt;BR /&gt;endobj&lt;/P&gt;
&lt;P&gt;2 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /Type /Pages&lt;BR /&gt;/Kids [4 0 R 9 0 R 13 0 R 17 0 R 21 0 R 25 0 R 29 0 R 33 0 R 37 0 R 41 0 R 45 0 R 50 0 R 54 0 R 58 0 R 62 0 R 66 0 R 70 0 R 74 0 R 78 0 R 82 0 R 86 0 R 91 0 R 95 0 R 99 0 R 103 0 R 107 0 R 111 0 R 115 0 R 119 0 R 123 0 R 127 0 R 132 0 R 136 0 R 140 0 R 144 0 R 148 0 R 152 0 R 156 0 R 160 0 R 164 0 R 168 0 R 173 0 R 177 0 R 181 0 R 185 0 R]&lt;BR /&gt;/Count 45&lt;BR /&gt;&amp;gt;&amp;gt;&lt;BR /&gt;endobj&lt;/P&gt;
&lt;P&gt;3 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /ProcSet [/PDF /Text /ImageB /ImageC /ImageI]&lt;BR /&gt;/XObject &amp;lt;&amp;lt; /XIPLAYER0 6 0 R&lt;BR /&gt;&amp;gt;&amp;gt;&lt;/P&gt;
&lt;P&gt;&amp;gt;&amp;gt;&lt;BR /&gt;endobj&lt;/P&gt;
&lt;P&gt;4 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /Type /Page&lt;BR /&gt;/Parent 2 0 R&lt;BR /&gt;/Resources 3 0 R&lt;BR /&gt;/MediaBox [0 0 596 842]&lt;BR /&gt;/Contents 5 0 R&lt;BR /&gt;&amp;gt;&amp;gt;&lt;BR /&gt;endobj&lt;/P&gt;
&lt;P&gt;5 0 obj&lt;BR /&gt;&amp;lt;&amp;lt; /Length 72&lt;BR /&gt;/Filter /FlateDecode&lt;BR /&gt;&amp;gt;&amp;gt;&lt;/P&gt;
&lt;P&gt;stream&lt;BR /&gt;x�SPPP(�R&lt;BR /&gt;--------- download version 3 409 fail -------------------------------------------&lt;/P&gt;
&lt;P&gt;POST &lt;A href="https://content.dropboxapi.com/2/files/download" target="_blank" rel="noopener"&gt;https://content.dropboxapi.com/2/files/download&lt;/A&gt; HTTP/1.1&lt;BR /&gt;Authorization: Bearer&amp;nbsp;&amp;lt;ACCESS_TOKEN&amp;gt;&lt;BR /&gt;User-Agent: OfficialDropboxDotNetSDKv2/4.0.0.0&lt;BR /&gt;Dropbox-API-Arg: {"path":"/HTK Scanning Project/a berne/Attached/DIAZDE1.pdf","rev":"92f4133c6d4"}&lt;BR /&gt;Host: content.dropboxapi.com&lt;BR /&gt;Content-Length: 0&lt;/P&gt;
&lt;P&gt;&lt;BR /&gt;HTTP/1.1 409 path/not_found/...&lt;BR /&gt;Server: nginx&lt;BR /&gt;Date: Tue, 19 Jun 2018 09:24:48 GMT&lt;BR /&gt;Content-Type: application/json&lt;BR /&gt;Connection: keep-alive&lt;BR /&gt;Content-Security-Policy: sandbox allow-forms allow-scripts&lt;BR /&gt;X-Dropbox-Request-Id: ba21b5b63c20fb5d349f27bcef6321b7&lt;BR /&gt;X-Robots-Tag: noindex, nofollow, noimageindex&lt;BR /&gt;Content-Length: 97&lt;/P&gt;
&lt;P&gt;{"error_summary": "path/not_found/...", "error": {".tag": "path", "path": {".tag": "not_found"}}}&lt;/P&gt;</description>
      <pubDate>Fri, 29 May 2020 17:09:47 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/409-error-while-revision-download/m-p/280981#M17129</guid>
      <dc:creator>dolphin_cloudsf</dc:creator>
      <dc:date>2020-05-29T17:09:47Z</dc:date>
    </item>
    <item>
      <title>Re: 409 error while revision download</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/409-error-while-revision-download/m-p/281216#M17196</link>
      <description>&lt;P&gt;The version of the file you're trying to download is from 2017-04-17. Note that &lt;A href="https://www.dropbox.com/help/security/data-retention-policy" target="_self"&gt;Dropbox only retains old versions of files for a limited amount of time&lt;/A&gt;, depending on the account type. This error is indicating that this version is no longer available.&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;By the way, I removed it from your post, but for the sake of security, you should disable that access token, since you posted it publicly. You can do so by revoking access to the app entirely, if the access token is for your account, here:&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;A href="https://www.dropbox.com/account/connected_apps" target="_blank"&gt;https://www.dropbox.com/account/connected_apps&lt;/A&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Or, you can disable just this access token using the API:&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;A href="https://www.dropbox.com/developers/documentation/http/documentation#auth-token-revoke" target="_blank"&gt;https://www.dropbox.com/developers/documentation/http/documentation#auth-token-revoke&lt;/A&gt;&lt;/P&gt;</description>
      <pubDate>Wed, 20 Jun 2018 17:54:28 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/409-error-while-revision-download/m-p/281216#M17196</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2018-06-20T17:54:28Z</dc:date>
    </item>
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