Demonstration CA was found in use in this environment Warning

Hi

I am using weblogic 12.2.1.4.0

I configured custom keystore with 3rd party CA certificate on my managed server as in Oracle documentation

and still, when starting the managed server i see the below warning on stdout:

<Apr 19, 2023 11:12:17,937 AM IDT> <Warning> <oracle.jps.keystore> <BEA-000000> <**************************************************************

* Demonstration CA was found in use in this environment.   *

* This deployment may be vulnerable to security attacks.   *

* Replace the Demonstration CA with a custom CA immediately. *

why ?

can I ignore it?

facts:

the same JKS in our old environment with weblogic 12.1.3 did not show this warning