You can modify an existing Web service exposure definition in the current schema.
To change a Web service exposure definition
From the Exposure Browser, select the Change command from the Exposure menu.
The Web Service Exposure wizard is then displayed. For details about the Web Service Exposure wizard steps, see "Adding a Web Service Exposure Definition", earlier in this chapter.
When you are changing an exposure, only classes that have already been selected and classes that are determined as being required (by checking the parameters and return types of the Web service methods) are displayed for selection, so that the list is not cluttered with classes that are not likely to be needed. The Show All check box on the Exposure sheet of the Web Service Exposure wizard displays all classes that were displayed when the service was created.
When you are changing an existing Web service exposure definition, the Exposure List Name text box in the Classes sheet displays the name of your selected Web service exposure definition.