The structured field introducers produced for the LISTRACK subcommand with OUTPUT=FIELDS are:

<Begin RACK/BIN Group>
  <RCK  - Rack or Bin Number       :  6, character         >
  <VOL  - Volume Serial            :  6, character         >
  <RST  - Rack or Bin Status       :  1, bin(8)            >
  <LOC  - Location                 :  8, character         >
  <MEDN - Media Name               :  8, character         >
  <PID  - Pool Prefix              :  6, character         >
  <TZ   - Time Zone                :  4, bin(32)           >
  <LCDJ - Last Change Date         :  4, packed decimal    >
  <LCTM - Last Change Time         :  4, packed decimal    >
  <LCID - Last Change User ID      :  8, character         >
  <LCSI - Last Change System ID    :  8, character         >
  <LCUD - Last "User" Change Date  :  4, packed decimal    >
  <LCUT - Last "User" Change Time  :  4, packed decimal    >
<End RACK/BIN Group>