As workaround, on your publish instance:https://XXXXXX.adobedemo.com/crx/de/index.jsp#/etc/cloudservices/testandtarget/<target-cloud-config-name>/jcr%3Acontent/publicand changed client code from <the one entered in Target IMS config, found from Target URL> to <classic client code found on Target's i...

As workaround: On your publish instance:https://XXXXXX.adobedemo.com/crx/de/index.jsp#/etc/cloudservices/testandtarget/<target-cloud-config-name>/jcr%3Acontent/publicand changed client code from <the one entered in Target IMS config, found from Target URL> to <classic client code found on Target's i...

AT: Rendering mbox failed target-global-mbox Object { status: "error", error: "unknown client code: adobeapac37" }I am using AEM + Target + IMS + IO with AEM 6.5.3