The WebService Designer uses the web service catalog to provide a finished example of a web service that delivers customer data from SAP.
In this scenario we will use this finished example.

Under the Operations section, click the Create a new operation button. The New Operation Dialog dialog box appears. Click on Catalog.

Choose SAPCustomerWebService as the Web service, then choose the operation GetCustomers and Click OK.

WSD-CatalogDialog

Click OK again in the New Operation Dialog window.

The GetCustomer operation is displayed in the WebService Designer window.
The operation has a START point with the name of the operation. This is followed by an EXECUTE FUNCTION activity that calls the remote-enabled function module SD_RFC_CUSTOMER_GET in SAP.
In the next steps we will take a closer look at the activity.
After the EXECUTE FUNCTION activity, the web service operation is terminated.

WSD-OperationDialog