Fix for wrong alternate key exception

FakeXrmEasy.Shared/XrmFakedContext.Crud.cs

@@ -60,7 +60,7 @@ public Guid GetRecordUniqueId(EntityReference record, bool validate = true)
                             }
                             if (validate)
                             {
-                                new FaultException<OrganizationServiceFault>(new OrganizationServiceFault(), $"{record.LogicalName} with the specified Alternate Keys Does Not Exist");
+                                throw new FaultException<OrganizationServiceFault>(new OrganizationServiceFault(), $"{record.LogicalName} with the specified Alternate Keys Does Not Exist");
                             }
                         }
                     }