Getting the message "This API is experimental" when using the Jira Service Management Rest API

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Platform Notice: Server and Data Center Only - This article only applies to Atlassian products on the server and data center platforms.


While performing the REST API using the new Jira Service Management API, the following is thrown:

This API is experimental. Experimental APIs are not guaranteed to be stable within the preview period. You must set the header 'X-ExperimentalApi: opt-in' to opt into using this API. 


  1. The user you used for authentication does not have the necessary permission to view the ticket OR
  2.  The request type for the issue that is being retrieved is not set accordingly


Set the value above accordingly

Last modified on May 23, 2022

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