In all my OSB services, I notice that compression doesn't seem to work when working with business services.
I have JDeveloper 12.2.1.4 with integrated WebLogic and service bus on my development system. In the business service, I added check mark to "Support Compression" which enables the "Request Compression Algorithm" drop down. According to https://docs.oracle.com/en/middleware/soa-suite/service-bus/12.2.1.3/develop/using-http-and-poller-transports.html#GUID-E79C6BB4-B1AF-4541-A5EC-EF2A805B16DB this should add the Accept-Encoding header to the REST request.

However, checking on the external server as well as looking at HTTP traffic using Wireshark, this header is not being added.
Any ideas on what to do?