Type: data
Encoded (non-ASCII characters) representation of the LegMarketDisruptionFallbackUnderlierSecurityDesc (41475) field in the encoded format specified via the MessageEncoding (347) field. If used, the ASCII (English) representation should also be specified in the LegMarketDisruptionFallbackUnderlierSecurityDesc (41475) field.
Added in protocol FIX.5.0SP2 (EP 169)