Nixie Elimination Service (NES)
NES footnotes were officially discontinued with the move from NCOA to NCOALink™. To support systems that still rely on NES codes, we continue to generate them; however, we encourage you to use NCOALinkreturn codes (page 4 of the PDF) in place of NES footnotes when possible.
Due to the strict matching criteria, the USPS® has developed the Nixie Elimination Service (NES) option in NCOALink processing. NES will return
footnotes on names and addresses that are similar to names and addresses on the NCOALink database, but are not close enough to be considered a match. NES will identify a population of customers that may have moved. New address information will not be returned on the mail
list, but the footnotes describing why the name and address could not be considered a match will be returned. The move effective date and type of move may be returned along with NES footnotes.
There are several options for handling the NES matches. In some cases, the NES match
identifies a person or family that has moved. However, some of the NES matches are not
moves at all; they are simply similar to a name and/or address of someone who has moved. It
is not recommended to simply eliminate NES matches names from a mailing. By utilizing one
of the following strategies for NES matches, movers and new addresses can often be
identified: mailing first class postcards requesting updated information or offering a special
promotion, a telemarketing promotion to verify the address information, or an endorsed
mailing.