Considering such an enumeration :
type TTypeOfData = ( [XmlName(\'ABC\')] todABC, [XmlName(\'DEF\')] todDEF, [XmlName(\'GHI\')] todGHI );
I use and array of string in the const section:
type TTypeOfData = ( todABC, todDEF, todGHI ); const TypeOfDataText: array[TTypeOfData] of string = ( 'ABC', 'DEF', 'GHI' );