https://community.esri.com/t5/developers-questions/applyedits-failing-html-response-instead-of-json/m-p/1615880#M7522 <P class="">Hello,</P><P class="">I’m encountering an issue with the applyEdits operation on a Feature Service in ArcGIS Server 10.4, accessed via the ArcGIS API for JavaScript 4.x.&nbsp;</P><P class="">When making an applyEdits request to the Feature Service, instead of receiving the expected JSON response, I get an <STRONG>HTML page</STRONG> with an error embedded in it. This causes the JavaScript API to throw a parsing error.</P><P class="">URL: FeatureServer/0/applyEdits</P><LI-CODE lang="javascript">const response = await this.featureLayer.queryFeatures(query); for (const item of response.features) { const geometry = new Point(item.geometry); const graphic = new Graphic({ geometry, attributes: attr }); features.push(graphic); } this.featureLayer.applyEdits(edits, options).then(function(results) { }).catch(function(error) { console.error("Error applying edits:", error); }); const edits = { addFeatures:null, deleteFeatures: null, updateFeatures: features }; const options = { globalIdUsed: false, rollbackOnFailureEnabled: false };</LI-CODE><P>&nbsp;</P><P><STRONG>Important note:</STRONG></P><P class="">This call is not made manually — it's triggered by the API's&nbsp; applyedits function.</P><P class="">&nbsp;The Feature Service is accessed via a proxy, which works fine for other requests (e.g., query)</P><P class="">The same service and code work perfectly with ArcGIS JavaScript API 3.x, including applyedits.</P> Mon, 19 May 2025 08:14:35 GMT alabanu 2025-05-19T08:14:35Z https://community.esri.com/t5/developers-questions/applyedits-failing-html-response-instead-of-json/m-p/1615880#M7522 <P class="">Hello,</P><P class="">I’m encountering an issue with the applyEdits operation on a Feature Service in ArcGIS Server 10.4, accessed via the ArcGIS API for JavaScript 4.x.&nbsp;</P><P class="">When making an applyEdits request to the Feature Service, instead of receiving the expected JSON response, I get an <STRONG>HTML page</STRONG> with an error embedded in it. This causes the JavaScript API to throw a parsing error.</P><P class="">URL: FeatureServer/0/applyEdits</P><LI-CODE lang="javascript">const response = await this.featureLayer.queryFeatures(query); for (const item of response.features) { const geometry = new Point(item.geometry); const graphic = new Graphic({ geometry, attributes: attr }); features.push(graphic); } this.featureLayer.applyEdits(edits, options).then(function(results) { }).catch(function(error) { console.error("Error applying edits:", error); }); const edits = { addFeatures:null, deleteFeatures: null, updateFeatures: features }; const options = { globalIdUsed: false, rollbackOnFailureEnabled: false };</LI-CODE><P>&nbsp;</P><P><STRONG>Important note:</STRONG></P><P class="">This call is not made manually — it's triggered by the API's&nbsp; applyedits function.</P><P class="">&nbsp;The Feature Service is accessed via a proxy, which works fine for other requests (e.g., query)</P><P class="">The same service and code work perfectly with ArcGIS JavaScript API 3.x, including applyedits.</P> Mon, 19 May 2025 08:14:35 GMT https://community.esri.com/t5/developers-questions/applyedits-failing-html-response-instead-of-json/m-p/1615880#M7522 alabanu 2025-05-19T08:14:35Z