If Tomcat is being used, then refer to the server.xml file to identify the trusted store in use. If no explicit mention is made there, it’s likely using the default cacerts keystore.
You can then explore this keystore. If required, attempt to access it with the default password “changeit”. If this doesn’t succeed, you’ll need to locate the correct password, potentially documented in an SOP or configuration files.
Also, dont forgot to look under Java tab of the tomcat GUI application, Tomcat9w.exe for windows.