EAP patches can only be rolled back in reverse order. For example, if the patches jboss-eap-7.3.1.CP, jboss-eap-7.3.2.CP and jboss-eap-7.3.3.CP have been applied to a 7.3.0 installation, the patches must be rolled back in the following order: jboss-eap-7.3.3.CP, jboss-eap-7.3.2.CP, jboss-eap-7.3.1.CP.

Since patches must be rolled back in reverse order, there should only be a button in the HAL console to roll back the latest patch to have been applied. As it stands, the console appears to give the option to roll back any of the installed patches (see screenshot). Clicking on the button to roll back any patch other than the last one to be applied gives the following error: Rollback error, cause: "WFLYPAT0011: Cannot rollback patch (jboss-eap-7.3.1.CP)"