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    <title>topic Overwriting Hosted Feature Service via REST in Developers Questions</title>
    <link>https://community.esri.com/t5/developers-questions/overwriting-hosted-feature-service-via-rest/m-p/486110#M3268</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;A quick skills background... Not a full time programmer, proficient enough in Python to get by but VERY new to REST API scripting. So forgive me if there is an easy answer, I am missing something simple or a different approach is warranted.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I am trying to update an existing hosted feature service by using the 'Publish Item' operation&amp;nbsp;using&amp;nbsp;the &lt;STRONG&gt;overwrite=true&lt;/STRONG&gt; parameter. (API Reference: &lt;A href="http://resources.arcgis.com/en/help/arcgis-rest-api/#/Publish_Item/02r300000080000000/" rel="nofollow noopener noreferrer" target="_blank"&gt;ArcGIS REST API - Publish Item&lt;/A&gt;).&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The following function (minus overwrite param) works perfectly to publish the feature service from an existing geojson item I have already added to Portal. &amp;nbsp;When I add the the overwrite parameter, I get the message&amp;nbsp;that the service with that name already exists. Seems like it checks the service name before recognizing the overwrite parameter. &amp;nbsp;Service is not delete protected. &amp;nbsp;Seems simple and straightforward adding of a parameter to the REST call. &amp;nbsp;Resulting URLs from the original publishing POST call and the update call are the same except for '&amp;amp;overwrite=true' is added to the URL. &amp;nbsp; What am I missing?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P style="padding-left: 30px;"&gt;&lt;SPAN style="font-family: terminal, monaco, monospace;"&gt;"Publish error for item 'CMT_Test3.geojson'. Service name 'CMT_Test3' already exists"&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;PRE class="lia-code-sample line-numbers language-none"&gt;&lt;CODE&gt;&lt;SPAN class="keyword token"&gt;def&lt;/SPAN&gt; &lt;SPAN class="token function"&gt;PublishService&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;Short&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; itemID&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; username&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; token&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; itemName&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; publishParams&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;

&amp;nbsp;&amp;nbsp;&amp;nbsp; publishURL &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;&lt;SPAN&gt;'&lt;/SPAN&gt;&lt;A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=http%3A%2F%2F" target="_blank"&gt;http://&lt;/A&gt;&lt;SPAN&gt;{}/portal/sharing/rest/content/users/{}/publish'&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;format&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;Short&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; username&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp; query_dict &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; &lt;SPAN class="punctuation token"&gt;{&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'itemID'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; itemID&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'filetype'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;'GeoJson'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'f'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;'json'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'token'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; token&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'overwrite'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;'true'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'publishParameters'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;publishParams&lt;SPAN class="punctuation token"&gt;}&lt;/SPAN&gt;

&amp;nbsp;&amp;nbsp;&amp;nbsp; query_dict&lt;SPAN class="punctuation token"&gt;[&lt;/SPAN&gt;&lt;SPAN class="string token"&gt;'publishParameters'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;]&lt;/SPAN&gt; &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; json&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;dumps&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;query_dict&lt;SPAN class="punctuation token"&gt;[&lt;/SPAN&gt;&lt;SPAN class="string token"&gt;'publishParameters'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;]&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; sort_keys&lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt;&lt;SPAN class="token boolean"&gt;False&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp; request &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; requests&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;post&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;publishURL&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; data&lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt;query_dict&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="keyword token"&gt;return&lt;/SPAN&gt; request&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;json&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Sat, 11 Dec 2021 21:25:23 GMT</pubDate>
    <dc:creator>GregGalligan1</dc:creator>
    <dc:date>2021-12-11T21:25:23Z</dc:date>
    <item>
      <title>Overwriting Hosted Feature Service via REST</title>
      <link>https://community.esri.com/t5/developers-questions/overwriting-hosted-feature-service-via-rest/m-p/486110#M3268</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;A quick skills background... Not a full time programmer, proficient enough in Python to get by but VERY new to REST API scripting. So forgive me if there is an easy answer, I am missing something simple or a different approach is warranted.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I am trying to update an existing hosted feature service by using the 'Publish Item' operation&amp;nbsp;using&amp;nbsp;the &lt;STRONG&gt;overwrite=true&lt;/STRONG&gt; parameter. (API Reference: &lt;A href="http://resources.arcgis.com/en/help/arcgis-rest-api/#/Publish_Item/02r300000080000000/" rel="nofollow noopener noreferrer" target="_blank"&gt;ArcGIS REST API - Publish Item&lt;/A&gt;).&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The following function (minus overwrite param) works perfectly to publish the feature service from an existing geojson item I have already added to Portal. &amp;nbsp;When I add the the overwrite parameter, I get the message&amp;nbsp;that the service with that name already exists. Seems like it checks the service name before recognizing the overwrite parameter. &amp;nbsp;Service is not delete protected. &amp;nbsp;Seems simple and straightforward adding of a parameter to the REST call. &amp;nbsp;Resulting URLs from the original publishing POST call and the update call are the same except for '&amp;amp;overwrite=true' is added to the URL. &amp;nbsp; What am I missing?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P style="padding-left: 30px;"&gt;&lt;SPAN style="font-family: terminal, monaco, monospace;"&gt;"Publish error for item 'CMT_Test3.geojson'. Service name 'CMT_Test3' already exists"&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;PRE class="lia-code-sample line-numbers language-none"&gt;&lt;CODE&gt;&lt;SPAN class="keyword token"&gt;def&lt;/SPAN&gt; &lt;SPAN class="token function"&gt;PublishService&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;Short&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; itemID&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; username&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; token&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; itemName&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; publishParams&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;

&amp;nbsp;&amp;nbsp;&amp;nbsp; publishURL &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;&lt;SPAN&gt;'&lt;/SPAN&gt;&lt;A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=http%3A%2F%2F" target="_blank"&gt;http://&lt;/A&gt;&lt;SPAN&gt;{}/portal/sharing/rest/content/users/{}/publish'&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;format&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;Short&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; username&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp; query_dict &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; &lt;SPAN class="punctuation token"&gt;{&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'itemID'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; itemID&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'filetype'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;'GeoJson'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'f'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;'json'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'token'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; token&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'overwrite'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt; &lt;SPAN class="string token"&gt;'true'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="string token"&gt;'publishParameters'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;:&lt;/SPAN&gt;publishParams&lt;SPAN class="punctuation token"&gt;}&lt;/SPAN&gt;

&amp;nbsp;&amp;nbsp;&amp;nbsp; query_dict&lt;SPAN class="punctuation token"&gt;[&lt;/SPAN&gt;&lt;SPAN class="string token"&gt;'publishParameters'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;]&lt;/SPAN&gt; &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; json&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;dumps&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;query_dict&lt;SPAN class="punctuation token"&gt;[&lt;/SPAN&gt;&lt;SPAN class="string token"&gt;'publishParameters'&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;]&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; sort_keys&lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt;&lt;SPAN class="token boolean"&gt;False&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp; request &lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt; requests&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;post&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;publishURL&lt;SPAN class="punctuation token"&gt;,&lt;/SPAN&gt; data&lt;SPAN class="operator token"&gt;=&lt;/SPAN&gt;query_dict&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;SPAN class="keyword token"&gt;return&lt;/SPAN&gt; request&lt;SPAN class="punctuation token"&gt;.&lt;/SPAN&gt;json&lt;SPAN class="punctuation token"&gt;(&lt;/SPAN&gt;&lt;SPAN class="punctuation token"&gt;)&lt;/SPAN&gt;
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍&lt;SPAN class="line-numbers-rows"&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;SPAN&gt;‍&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/PRE&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sat, 11 Dec 2021 21:25:23 GMT</pubDate>
      <guid>https://community.esri.com/t5/developers-questions/overwriting-hosted-feature-service-via-rest/m-p/486110#M3268</guid>
      <dc:creator>GregGalligan1</dc:creator>
      <dc:date>2021-12-11T21:25:23Z</dc:date>
    </item>
    <item>
      <title>Re: Overwriting Hosted Feature Service via REST</title>
      <link>https://community.esri.com/t5/developers-questions/overwriting-hosted-feature-service-via-rest/m-p/486111#M3269</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;According to ESRI this is a bug in the documentation. Hosted feature services cannot be overwritten. A documentation bug has been logged to remove the 'overwrite' parameter.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Doc Bug number is: BUG-000100370&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Thu, 27 Oct 2016 17:06:11 GMT</pubDate>
      <guid>https://community.esri.com/t5/developers-questions/overwriting-hosted-feature-service-via-rest/m-p/486111#M3269</guid>
      <dc:creator>GregGalligan1</dc:creator>
      <dc:date>2016-10-27T17:06:11Z</dc:date>
    </item>
    <item>
      <title>Re: Overwriting Hosted Feature Service via REST</title>
      <link>https://community.esri.com/t5/developers-questions/overwriting-hosted-feature-service-via-rest/m-p/1584830#M7427</link>
      <description>&lt;P&gt;I know this is an old post, but what is the best wat to rehost a Feature Layer if you update the data using the rest api?&lt;/P&gt;</description>
      <pubDate>Thu, 13 Feb 2025 11:16:58 GMT</pubDate>
      <guid>https://community.esri.com/t5/developers-questions/overwriting-hosted-feature-service-via-rest/m-p/1584830#M7427</guid>
      <dc:creator>pzitman</dc:creator>
      <dc:date>2025-02-13T11:16:58Z</dc:date>
    </item>
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