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An Error Occurs when Performing a REST Call from an External Server [CORS preflight response did not succeed] (Doc ID 2734367.1)

Last updated on JANUARY 04, 2021

Applies to:

Oracle BigMachines CPQ Cloud Service - Version 20 B Patch 2 and later
Information in this document applies to any platform.


When attempting to perform a REST call via an external system, the following error occurs.

Access to XMLttpRequest at '' from origin '' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-allow-Origin' header is present on the requested resource.

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the
remote resource at (Reason: CORS preflight response did not succeed)


The environment was upgraded to version 20B Patch 2 or later.


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