WHO-DD check SD1344

Thanks for adding validation for WHO Drug!   Can you provide further information on what "Drug Name" is being checked in SD1344.   In 2017, UMC recommended storing either the Preferred Base Name (code ending in 01 001) or Preferred Salt Name (code ending in 001) in CMDECOD.  Is the check using one of these methods or is it using all possible Drug Name values (irregardless of preferred name or base)?