Sequence contains more than one matching element : Key=66e18764-5995-4ef4-afd8-33827e33d029;RelatedProductId=dd0614b5-f6d9-4617-92c3-a862a3b0456e
Sequence contains more than one matching element : Key=66e18764-5995-4ef4-afd8-33827e33d029;RelatedProductId=dd0614b5-f6d9-4617-92c3-a862a3b0456e
at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate)
at Storefronts.PortalEngine.Data.Repositories.Product.ProductRelationshipRepository.Populate(PartnerId partnerId, DataSet dataSet) in c:\builds\pearsontechnology\gpt\stor\PortalEngine\InformIT.NET\Storefronts.PortalEngine.Data\Repositories\Product\ProductRelationshipRepository.cs:line 416