Mailing Industry Definitions

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  Carrier Route The addresses which a carrier delivers mail. A Carrier Route includes city routes, rural routes, highway contract routes, Post Office™ box sections and general delivery units.  
  County The largest administrative division of most states in the United States.  
  Delivery Point Code The code by which a mail piece can be sorted by its address. This code is formatted from the ZIP + 4®.  
  Check Digit The one-digit number that is part of each bar code. It is required for all customer-generated special services forms to delete errors resulting from manual data entry or errors from transmitted data.  
  LAC™ Indicator The LAC Address Conversion Service indicator describes records that have been converted by LAC Service from rural route to city-style addresses so that emergency vehicles (e.g., ambulances, police cars, etc.) can more easily find these locations  
  eLOT™ sequence number eLOT Travel Line Product was developed to give mailers the ability to sort their mailings in approximate carrier-casing sequence. To aid in mail sortation, eLOT contains an eLOT sequence number, this number indicates the first occurrence of delivery made to the add-on range within the carrier route.  
  eLOT Ascending/Descending Indicator The ascending/descending code indicates the approximate delivery order within the sequence number.  
  Record Type Code The code facilitates identifying or confirming certain software matches when delivery point assignment are erroneous. This field contains a single alpha character that indicates the record type.  
  PMB (Private Mail Box) Designator This designates that an address is a private mail box.  
  PMB Number This is the number of a private mail box.  
  Default Flag This will indicate if an address is a default address. A default address is an address that requires additional information to match to a specific address to determine the correct ZIP+4 Code.  
  EWS (Early Warning System) Flag This indicates that an address is not in the US Postal Service’s ZIP+4 records. These addresses are, however, valid addresses as formatted and should not be changed in any way since the Postal Service will be assigning ZIP + 4 codes to these addresses.  
  DPV Confirmation Indicator This indicates whether an address is a valid delivery point.  
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