diff --git a/cogs/results/ctr_support.py b/cogs/results/ctr_support.py
index b58c1cb83..63512dd70 100644
--- a/cogs/results/ctr_support.py
+++ b/cogs/results/ctr_support.py
@@ -101,6 +101,7 @@
 # 006: online matchmaking and gameplay errors
 matchmaking = Module('matchmaking', {
     112: ResultInfo('Typically displayed when an issue with connecting to Pokémon Bank occurs.', 'https://en-americas-support.nintendo.com/app/answers/detail/a_id/4203/'),
+    303: ResultInfo('Displayed when the console tried to log in with an invalid user name, i.e. the user name does not exist in the database. As of late, it is also displayed due to online play servers being no longer synchronized with new NEX accounts.', 'https://pretendo.network/blog/12-23-23'),
     332: ResultInfo('Caused by closed ports when attempting matchmaking(?)'),
     (501, 502): ResultInfo('This may indicate in issue with the network being used blocking traffic necessary for online play.', 'https://en-americas-support.nintendo.com/app/answers/detail/a_id/4204'),
     612: ResultInfo('This error code generally indicates that your network is not optimal for peer to peer connections, likely due to your network\'s NAT type.', 'https://en-americas-support.nintendo.com/app/answers/detail/a_id/25881'),
diff --git a/cogs/results/wiiu_support.py b/cogs/results/wiiu_support.py
index 987e02638..a560e6f4a 100644
--- a/cogs/results/wiiu_support.py
+++ b/cogs/results/wiiu_support.py
@@ -359,7 +359,7 @@
     118: ResultInfo('Invalid sequence.'),
     301: ResultInfo('Connection was unable to be established, either with the Rendez-Vous back end or a Peer.'),
     302: ResultInfo('The Principal could not be authenticated by the Authentication Service.'),
-    303: ResultInfo('The Principal tried to log in with an invalid user name, i.e. the user name does not exist in the database.'),
+    303: ResultInfo('The Principal tried to log in with an invalid user name, i.e. the user name does not exist in the database. As of late, it is also displayed due to online play servers being no longer synchronized with new NEX accounts.', 'https://pretendo.network/blog/12-23-23'),
     304: ResultInfo('The Principal either tried to log in with an invalid password for the provided user name or tried to join a Gathering with an invalid password.'),
     305: ResultInfo('The provided user name already exists in the database. All usernames must be unique.'),
     306: ResultInfo('The Principal\'s account still exists in the database but the account has been disabled.', is_ban=True),