Oracle Weblogic Server - Conflict between custom provider and Default Authentication Provider.

According to ORACLE documentation, each Oracle WebLogic Server domain must have one server instance that acts as the Administration Server. Additionally, a domain may have as many security realms as required but only one can be active at a time. Finally, each security realm must have at least one Authentication Provider. We have defined in the default realm (myrealm) a custom authentication provider and we found that we also need to include the DefaultAuthenticationProvider to gain access to the Admin Console (notice that both providers were defined as SUFFICIENT for this reason). Due to security requirements, we don't want invocations