1032: Basket does not extend UnderlyingAsset in fpml-asset-4-8.xsd
The Basket type extends Asset rather than UnderlyingAsset. This means that the basket element that’s declared in the underlyingAsset substitution group is illegal. This causes validation errors on XML documents that include an underlyingAsset substitution. Basket correctly extends UnderlyingAsset in 4.7 and 5.0 version, but not in 4.8