I know others have brought this up, but it needs to be brought up again because nothing has been changed. as of 2.7.3.
The Covenant Hero Shield, Dominion Hero Shield and Pact Hero Shield are on their respective achievement vendors in Cyrodiil. A player can only access the shield belonging to their home alliance.
This is a problem because the Achievements needed to unlock these furnishings are Hero of the Daggerfall Covenant, Hero of the Aldmeri Dominion and Hero of the Ebonheart Pact which are PvE achievements (requiring the player to complete a certain number of quests in each of the alliance PvE zones).
If we have completed all three achievements on one character we should be able to purchase all three shields!
Please move these items to the Achievement Furnishers in the Capital Cities. Please!
PvE Achievement Furnishings do NOT belong on PvP vendors.