DATA APPLICATION CATEGORY 31 – VOLUNTARY CHANGES The information contained in this document is the property of ATPCO. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form, or by any means; mechanical, photocopying, recording, or otherwise, without the prior written permission of ATPCO. Under the law, copying includes translating into another language or format. Legal action will be taken against any infringement. Copyright © 2002 by Airline Tariff Publishing Company All rights reserved DATA APPLICATION FOR CATEGORY 31 – VOLUNTARY CHANGES Table of Contents 1.0. OVERVIEW ......................................................................................................................................................................................................................... 1 1.1. DATA REQUIREMENTS.......................................................................................................................................................... 2 1.2. DESIGN OVERVIEW................................................................................................................................................................ 2 1.2.1. Four Separate Categories .................................................................................................................................................... 2 1.2.2. Special Record Processing Flow ......................................................................................................................................... 3 1.2.3. Continued Existence of Category 16 .................................................................................................................................. 5 2.0. DEFINITIONS AND ASSUMPTIONS .............................................................................................................................................................................. 7 2.1. DEFINITIONS ............................................................................................................................................................................ 7 2.2. ASSUMPTIONS ......................................................................................................................................................................... 9 2.2.1. Record Matching ................................................................................................................................................................. 9 2.2.2. Partially or Fully Flown Fare Components ....................................................................................................................... 13 2.2.2.1. No Change to Fare Break Points ................................................................................................................................... 14 2.2.2.2. Change to Fare Break Points ......................................................................................................................................... 16 3.0. DETAILED FIELD PROCESSING ................................................................................................................................................................................. 17 3.1. CATEGORY 31 ........................................................................................................................................................................ 17 3.2. WAIVER TABLE 987 .............................................................................................................................................................. 20 3.3. REISSUE TABLE 988 ............................................................................................................................................................. 21 3.4. MAJOR SECTIONS OF THE OUTPUT RECORD ................................................................................................................ 24 4.0. PROCESSING .................................................................................................................................................................................................................... 26 4.1. ITINERARY ANALYSIS FOR HISTORICAL RECORD 2 RETRIEVAL ........................................................................... 30 4.1.1. Determine previously ticketed itinerary ............................................................................................................................ 30 4.1.2. New Itinerary .................................................................................................................................................................... 30 4.1.3. Identify all points of change ............................................................................................................................................. 31 4.1.4. Retrieve the Record 2 - Category 31 & Category 5 .......................................................................................................... 32 4.2. MATCH THE APPLICABLE CATEGORY 31 RECORD 3 TABLE .................................................................................... 36 4.2.1. Matching the Who fields (bytes 14-16, 51-54) ................................................................................................................. 37 4.2.1.1. Passenger Type Code (bytes 14-16) ............................................................................................................................. 37 Revised January 2016 Effective 30 June 2016 DATA APPLICATION FOR CATEGORY 31 – VOLUNTARY CHANGES 4.2.1.2. Passenger Occurrence – First/Last (bytes 51-54) ......................................................................................................... 40 4.2.2. Waiver Table 987 (bytes 17-24) ....................................................................................................................................... 44 4.2.3. Matching the When fields (bytes 25-30, 44-48, 137-144) ................................................................................................ 46 4.2.3.1. Ticket Validity (Byte 25) .............................................................................................................................................. 47 4.2.3.2. Departure of Journey/Pricing Unit/Fare Component (Bytes 26-28) ............................................................................. 51 4.2.3.3. Advance Reservation (Bytes 29, 30, 44-46, 47-48) ...................................................................................................... 69 4.2.3.4. Override Date Table No. 994 (bytes 137-144) ............................................................................................................. 77 4.3. DETERMINE WHETHER CHANGE IS PERMITTED ......................................................................................................... 78 4.3.1. Change Indicator (Byte 50) ............................................................................................................................................... 78 4.4. MATCH THE APPLICABLE TABLE 988 ............................................................................................................................. 88 4.4.1. Travel Limit (bytes 23, 24) ............................................................................................................................................... 88 4.4.1.1. Stopover/Connection (byte 23) ..................................................................................................................................... 89 4.4.1.2. Portion (bytes 24, 25-40) .............................................................................................................................................. 96 4.4.2. Outbound Portion of Travel (byte 41) ............................................................................................................................ 103 4.4.3. Originally Scheduled Flight (bytes 56, 209-213) – When fields .................................................................................... 107 4.4.4. Date (byte 89) ................................................................................................................................................................. 132 4.4.5. Flight Number (byte 42) ................................................................................................................................................. 136 4.5. RE-PRICE THE NEW ITINERARY USING TABLE 988 ................................................................................................... 145 4.5.1 Stop (Table 988 byte 206)................................................................................................................................................... 146 4.5.2. Process Tag (bytes 21-22) ............................................................................................................................................... 153 4.5.2.1. Reissue to a Lower Fare – Byte 207 ........................................................................................................................... 218 4.5.3. Fare Break Limitations (bytes 43-46 and 48-55) ............................................................................................................ 219 4.5.3.1. Term (byte 43) ............................................................................................................................................................ 220 4.5.3.2. 1st Break (byte