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Again to create a new Data Set you right click on the Data Sets item in the Outline panel.
When you hit next you will get a page listing the entities and data definitions available on the server, and here you choose what data you want to retrieve. 
Here you can see the list of available entities in the left column and the list of all available data definition at the bottom of the middle column.
If you select one of the entities in the left column the list at the top of the middle column will populate with the list of data's that are associated with that entity. 
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The error at the top of the Data Set form indicates that we must choose a Data or Data Definition now that we've selected an entity |
Now we need to select the Data or Data Definition that will be the actual source of the data we wish to display. 
Once we've done this the Finish button is enabled again so we can complete the creation of the data definition.
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The third column, Filters, is used when creating a one to many data set and will be covered later. |
Once you click Finish you will progress to the standard BIRT data set editing wizard 
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