This element specifies the runtime settings for a web service reference. Runtime information is only needed in the following cases:
To define the port used to resolve a container-managed port
To define the default Stub/Call property settings for Stub objects
To define the URL of a final WSDL document to be used instead of the one associated with service-ref in the standard Java EE deployment descriptor
| Element | Required | Description | 
| only one | Specifies the web service reference name relative to java:comp/env | |
| zero or more | Specifies information for a port within a web service reference | |
| zero or more | Specifies JAX-RPC property values that can be set on a javax.xml.rpc. Call object before it is returned to the web service client | |
| zero or more | Specifies the name of the generated service implementation class | |
| zero or one | Specifies the WSDL service element that is being referenced. |