An EJB exists on the application server that takes, as one of its method parameters, an instance of another EJB.

An adapter service has been configured from the CreateInvokeEJB 2.1 or FetchInvokeEJB 3.0 adapter service template for the desired EJB, including the method used for creating the bean and the bean method to invoke (that is, the method that requires the other EJB).

An adapter service has been configured from the corresponding CreateEJB 2.1 or FetchEJB 3.0 adapter service template to create the second EJB.

You will provide all method input parameters at runtime.

Except as noted above, all other method input parameters and return values have types that are recognizable in Designer.