SSL peer shut down incorrectly in SCPI

I'm trying to connect to a SOAP webservice via SCPI located on. The service recently changed its endpoint. So I imported the complete SSL key chain for the new service, similar to the old endpoint. Finally, I configured the following settings in the SOAP channel:

When trying to send data to this channel, I get an error:

org.apache.cxf.interceptor.Fault: Could not send Message., cause: java.io.EOFException: SSL peer shut down incorrectly.

When trying to send the same content via SoapUI a valid response is received from the service. The configured endpoint only supports TLS 1.2.

Is there a way to retrieve more information from SCPI besides this error message?