The OPEN command loads the service and provider classes to handle the SOAP transaction.
The SERVICE keyword is a symbolic name for the service and provider classes created by the SOAP Wizard. This example uses a service class named com.acme.SearchService a and a provider class com.acme.SearchProvider for a SERVICE value of SEARCH:
The optional VALIDATE keyword controls whether XML Schema validation is done on the SOAP XML request and response messages. The external XML Schema files used to validate the SOAP messages is specified in the service properties file. The service and operation names are used in the service property to qualify each entry.