XML Modeling Lab 7 and runtime errors on DV 6.0 Beta

The XML schema is imported and the modeling is completed per the Lab on XML modeling. At runtime, during VDB execution, the sql scrap pad has the sql entered - select * from CustomerHoldingsXML.CustomersDocument

At this point the following error is displayed:

TEIID30328 Unable to evaluate "INPUT".AccountID: No value was available

The VDB will be attached per Steven Hawkins request.