You can add a local 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 local 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 local attribute then click Add Local Attribute on the pop-up menu. A local 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 local 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.