JAR Configuration 
Configuration
consists of providing the information required for deployment. The standard
deployment descriptor is ejb-jar.xml. The deployment descriptors ejb-j2ee-engine.xml and persistent.xml contain additional entries specific to the
SAP J2EE engine. The DTD for these descriptors are 
ejb-j2ee-engine.dtd
and persistent.dtd
respectively.
Configuration is extensively covered under Developing Enterprise Beans.
Process Flow
Both ejb-jar.xml and ejb-j2ee-engine.xmlare automatically generated when you create an EJB Module project. For more information, see Creating EJB Module Projects and Creating EJB Module DC Projects.
You can further edit the deployment descriptors using the multipage editor. See: