Hello,
I am attempting to append a header to upstream requests via the Kong Functions (Post-Plugins) by applying the plugin to a service so it will apply to all requests.
I am attempting to lookup the Custom_Id field of the authorized consumer and append that as the value of the header, shown below. I am not sure how to test this so the syntax may be off, but I am just getting 400 responses from Kong with no data. Is my syntax off, or something else?