If you do not have a schema or sample data to generate a schema, you can manually enter the parameters for which to generate a schema. To manually define a schema, click the Add icon, and select Add operation binding in the Operation Bindings section of the Create REST Binding dialog.

Note the following guidelines:

• In the URI Parameters section of the REST Operation Binding page, enter the necessary query or template parameters. You can select a data type for each parameter, but you do not need to enter an expression. If there is no schema and payload specified, when you click OK, the parameter schema is automatically generated (embedded in the WSDL). Parameters that have an expression that is mapped to a runtime property are not included in the generated schema.

• If there is no schema defined for an operation, the Expression Builder dialog that is accessible from the Expression column only shows property variables and no message variables.

For complete instructions about creating REST support, see How to Configure the REST Adapter as a Service Binding Component in a SOA Composite Application and How to Configure the REST Adapter as a Reference Binding Component in a SOA Composite Application.