Create an External Content List from a Mashup
Once you have an external content type defined for an ECT-enabled mashup, you can add external content lists with mashup results to SharePoint sites:
1. In SharePoint Designer, open the site you want to work in and select External Content Types.
2. Select the external content type for the mashup you want to use and click Create Lists and Forms in the ribbon.
3. Give the list a name, choose the operation to get an individual list item and save this list.
No forms are needed unless the mashup supports create, update or delete operations.