These are from the wsdl\vim25\ directory.

You can see the enum type in the file contents:

egrep -r "VirtualMachineRelocateDiskMoveOptions" ./
./vim25/vim.wsdl:         <simpleType name="VirtualMachineRelocateDiskMoveOptions">

Perhaps you are incorrectly using the wsdl\vim WSDL files?