One more mysterious issue with configuring Public Notification App -
When executing a search by parcel, the search executes successfully, but the drop-down options always show up as 'undefined'. I have configured the 'SearchDisplayFields' to be 'PARCEL' for the parcel query layer (our parcel variable name) and it simple does not read it even though the search finds the entered value.
PARCEL is also listed in the QueryOutFields. Beyond that I'm not sure where to look - I've checked other .js files, and also noted that if I use a different field in the 'SearchDisplayFields' (Site Address for example) and do a search by address, it does give the correct address values in the drop-down.