I am trying to use Lightning API in my salesforce org. I have followed this documentation provided by salesforce. But I am getting this response.

enter image description here

Raw Response
HTTP/1.1 404 Not Found
Date: Tue, 08 Aug 2017 07:08:17 GMT
Strict-Transport-Security: max-age=31536000; includeSubDomains
Public-Key-Pins-Report-Only: pin-sha256="9n0oMpnSRF+W4W4JTq51avSXkWhIhduS2bxVLfzXsY="; max-age=86400; report-uri="https://calm-dawn-26291.herokuapp.com/hpkp-report/00D28000000bYxx";
Content-Security-Policy: referrer origin-when-cross-origin
Set-Cookie: BrowserId=QIUD3fFrRhSMBo_bdkZO9A;Path=/;Domain=.salesforce.com;Expires=Sat, 07-Oct-2017 07:08:17 GMT
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Sforce-Limit-Info: api-usage=128/15000
Content-Type: application/json;charset=UTF-8
Transfer-Encoding: chunked

[ {
  "errorCode" : "NOT_FOUND",
  "message" : "The requested resource does not exist"
} ]
  • I have checked this on sendbox and personal free DE. – Kritik Aug 8 '17 at 7:19

This will likely be an Summer '17 feature, which would imply it needs API version 40.0.

Try changing the /v39.0/ out the in URL to /v40.0/.

Also, as per the current documentation, make sure you are calling the API against a Developer Edition org. It won't work on a sandbox.

Lightning API is available as a Developer Preview in all DE orgs. To use the API in another type of org, contact Salesforce.

Also, see Lightning API Name Changed to User Interface API.

The User Interface API base URL has changed from /lapi to /ui-api.


Finally, your URL shows the 006 keyprefix of an Opportunity. Opportunity isn't currently on the User Interface API Supported Objects list.

| improve this answer | |

The User Interface API base URL has changed from /lapi to /ui-api.

Try with this in WorkBench


Salesforce Summer ’17 Release Notes

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