TEXT: Erratum for PAL5-07 Troll Winter AR
  This erratum concerns the following favor on the
  Adventure Record for PAL5-07 Troll Winter:
  "Arms of Vengeance: For avenging the death of
  Tristan Spencer, Dorjan Oldrich has agreed to
  have forged for you any single magical weapon,
  armor, or shield of 9000 gp or less from Tables
  7-2, 7-5, 7-6, 7-9, 7-14, or 7-15 of the Dungeon
  Master's Guide. No non-Core materials (such as
  mithral or adamantine) are allowed. …"
  The limit of 9000 gp for this use of the favor
  does not include the cost of the masterwork
  item. Therefore, +3 armor and shields are
  allowed -- even +3 full plate (10,650 gp). This
  was the intent of the author (Donovan Hicks),
  and the current Pale Triad has approved this
  erratum.
  Pale Triad, January 2006:
  Derek Schubert
  Lance White
  Shelton Yee
  
SOURCE: textdata/thevault/Living Greyhawk/Modules/Theocracy of the Pale/595/Normal Scenarios/PAL5-07 - Troll Winter (APL 2-12)/PAL5-07 - errata.pdf