https://community.sap.com/t5/technology-q-a/error-in-fetching-api-through-sap-ui5-cors-error/qaa-p/14198636#M4924508 In Server they added my URL but i still face this issue Fri, 29 Aug 2025 06:55:52 GMT Akash_Kanyadhara 2025-08-29T06:55:52Z https://community.sap.com/t5/technology-q-a/error-in-fetching-api-through-sap-ui5-cors-error/qaq-p/14185489 <LI-CODE lang="javascript">onUpdateCaseDetails: function () { var sIncidentType1 = "Akash123"; var sCaseID = "UHEALTH-INVESTIG-WORK I-61005"; var sActionID = "pyUpdateCaseDetails"; var sUrl = "https://leaseplan01.pegalabs.io/prweb/api/application/v2/cases/" + encodeURIComponent(sCaseID) + "/actions/" + encodeURIComponent(sActionID) + "?viewType=form"; var sBearerToken = "XXXXXXXXX"; // your full token var oPayload = { content: { IncidentType: sIncidentType1 } }; $.ajax({ url: sUrl, method: "PATCH", contentType: "application/json", data: JSON.stringify(oPayload), headers: { "Authorization": "Bearer " + sBearerToken, "If-Match": "20250820T072129.183 GMT", "x-origin-channel": "Web", "Content-Type": "application/json", "Accept": "application/json" // "Access-Control-Allow-Origin" :"*" }, success: function (oResponse) { MessageToast.show("Case updated successfully!"); console.log("Update response:", oResponse); }, error: function (oError) { MessageToast.show("Update failed: " + oError.statusText); console.error("Update error:", oError); } }); },</LI-CODE> Thu, 21 Aug 2025 04:27:01 GMT https://community.sap.com/t5/technology-q-a/error-in-fetching-api-through-sap-ui5-cors-error/qaq-p/14185489 Akash_Kanyadhara 2025-08-21T04:27:01Z https://community.sap.com/t5/technology-q-a/error-in-fetching-api-through-sap-ui5-cors-error/qaa-p/14185665#M4923520 <P>Hi&nbsp;<a href="https://community.sap.com/t5/user/viewprofilepage/user-id/1975019">@Akash_Kanyadhara</a>&nbsp; i think&nbsp;&nbsp;<SPAN>This is a CORS issue. The browser sends a preflight </SPAN>OPTIONS<SPAN> request for your </SPAN>PATCH<SPAN> with custom headers, and the API response does not include the required CORS headers. You cannot fix this in UI5 code alone. You must either enable CORS on the API or call it through a proxy on BTP.<BR /><BR /></SPAN></P> Wed, 20 Aug 2025 19:56:11 GMT https://community.sap.com/t5/technology-q-a/error-in-fetching-api-through-sap-ui5-cors-error/qaa-p/14185665#M4923520 Marla-Ellinger 2025-08-20T19:56:11Z https://community.sap.com/t5/technology-q-a/error-in-fetching-api-through-sap-ui5-cors-error/qaa-p/14198636#M4924508 In Server they added my URL but i still face this issue Fri, 29 Aug 2025 06:55:52 GMT https://community.sap.com/t5/technology-q-a/error-in-fetching-api-through-sap-ui5-cors-error/qaa-p/14198636#M4924508 Akash_Kanyadhara 2025-08-29T06:55:52Z