In Enterprise Designer with the Project Explorer tab active, in the project tree, right-click the project or subproject where the DPAD will reside.
On the popup context menu, point to New, and click B2B Delivery Protocol Attributes Definition.
In the properties, enter a name (good practice is to enter a short name beginning with “dpad”, such as dpadCustom1) and click OK.
The project tree displays the new component.
This new component is useful only by virtue of its configuration — you need to add name/value pairs for the parameters you want it to define.