Set created_via by REST web services

Document ID : KB000102756
Last Modified Date : 20/06/2018
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When we create a request via REST web services, the web service sets the created_via field with the REST default value, but we want to change that value in the same creation operation. How can we achieve this?
CA Service Desk Manager 14.1
CA Service Desk Manager 17.1
This is not possible. Even if specifying a different created_via value as part of the creation request, this does not overwrite the created via default value.