You can add a wildcard attribute to a message, complex type or complex element. This task assumes that you have previously added the relevant message, complex type or complex element to your message model.
To add a wildcard attribute to a message, complex type or complex element:
Switch to the Enterprise Service Tools perspective.
In the Outline view, right-click the object (message, complex type or complex element) to which you are adding the wildcard attribute then click Add Wildcard Attribute on the pop-up menu. A wildcard attribute of type string is immediately added to the message model object and is assigned a default name.
Either type a new name for the wildcard attribute or press Enter to accept the default.
You can now configure the local element to your exact requirements. For further information on configuring message model objects see Configuring message model objects.