https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/8.1/html/red_hat_jboss_enterprise_application_platform_installation_methods/assembly_installing-jboss-eap-using-the-rpm-installtion-method_default#proc_installing-jboss-eap-using-the-rpm-installation-method_default

Section 6.2 "Installing JBoss EAP by using the RPM installation method"

The entire "2. Install JBoss EAP and JDK 11. JDK 11 is available for Red Hat Enterprise Linux 8 and later: " section is wrong. JDK 11 is not an option in EAP 8.1. The choices are 17 or 21.