After configuring HTTPS for the JCP on Websphere, a login to the system is not possible - the error message tells that no JCPs are available.
In the AWI logs messages can be found that the SSL handshake failed but with no details why.
When using an AWI with the same version on Tomcat it works flawlessly.
Websphere configuration issue.
Release : 12.3
Component : AUTOMATION ENGINE
we managed to solve the issue.
The root cause here is that JCP only allows TLS 1.2 and 1.3. Websphere tries with TLS 1.1 only.
On the Websphere JVM you need to set: -Dcom.ibm.jsse2.overrideDefaultTLS=true