routing
Parameters
value
Specifies which headers can be used during the request. Can only be set if protocol is HTTP or HTTPS for Application Load Balancers. Not supported for Network Load Balancer, or with a Gateway Load Balancer. Valid values are *, Accept, Accept-Language, Cache-Control, Content-Language, Content-Length, Content-Type, Expires, Last-Modified, Pragma. Dependent on your use-case other headers can be exposed and then set as a value consult the Access-Control-Allow-Headers documentation.