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    <title>topic 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/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;
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&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>
    <dc:creator>dolphin_cloudsf</dc:creator>
    <dc:date>2020-05-29T17:09:47Z</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;
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&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;
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&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;
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&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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