The ejb-ref-name element contains the name of an EJB
reference. The EJB reference is an entry in the
Deployment Component's environment and is relative to the
java:comp/env context. The name must be unique within the
Deployment Component.
It is recommended that name is prefixed with "ejb/".
Example:
<ejb-ref-name>ejb/Payroll</ejb-ref-name>