The facade can access the CHA Formatter Service through the WSIF EJB proxy. The WSIF EJB proxy invokes the CHA Formatter Service by using WSIF with EJB binding.
If it is another WSIF client requesting for format instead of a toolkit application, the WSIF client sends the request directly to the WSIF EJB proxy, without contacting the facade.
Similarly, if it is an EJB client requesting for format, it sends the request directly to the CHAFormatterServiceEJB, skipping both the facade and the WSIF EJB proxy.