diff --git a/Core/Callbacks/InventoryCallbacks.cs b/Core/Callbacks/InventoryCallbacks.cs
index 02c24fbb..cfe5b7fe 100644
--- a/Core/Callbacks/InventoryCallbacks.cs
+++ b/Core/Callbacks/InventoryCallbacks.cs
@@ -23,10 +23,9 @@ public class InventoryCallbacks(
     /// <returns></returns>
     public ItemEventRouterResponse MoveItem(PmcData pmcData, InventoryMoveRequestData info, string sessionID, ItemEventRouterResponse output)
     {
-        // _inventoryController.MoveItem(pmcData, info, sessionID, output);
-        // TODO: InventoryController is not implemented rn
-        // return output;
-        throw new NotImplementedException();
+         _inventoryController.MoveItem(pmcData, info, sessionID, output);
+
+         return output;
     }
 
     /// <summary>
diff --git a/Core/Callbacks/ItemEventCallbacks.cs b/Core/Callbacks/ItemEventCallbacks.cs
index 54e2c54f..555cc24d 100644
--- a/Core/Callbacks/ItemEventCallbacks.cs
+++ b/Core/Callbacks/ItemEventCallbacks.cs
@@ -27,7 +27,7 @@ public class ItemEventCallbacks(HttpResponseUtil _httpResponseUtil, ItemEventRou
     public bool IsCriticalError(List<Warning> warnings)
     {
         // List of non-critical error codes, we return true if any error NOT included is passed in
-        var nonCriticalErrorCodes = new List<BackendErrorCodes>() { BackendErrorCodes.NOTENOUGHSPACE };
+        var nonCriticalErrorCodes = new List<BackendErrorCodes> { BackendErrorCodes.NotEnoughSpace };
 
         foreach (var warning in warnings)
         {
@@ -44,7 +44,7 @@ public class ItemEventCallbacks(HttpResponseUtil _httpResponseUtil, ItemEventRou
     public int GetErrorCode(List<Warning> warnings)
     {
         return int.Parse((warnings[0].Code is null 
-            ? BackendErrorCodes.UNKNOWN_ERROR.ToString() 
+            ? BackendErrorCodes.UnknownError.ToString() 
             : warnings.FirstOrDefault()?.Code) ?? string.Empty);
     }
 }
diff --git a/Core/Controllers/InventoryController.cs b/Core/Controllers/InventoryController.cs
index 8b9d2d74..f5b72a1b 100644
--- a/Core/Controllers/InventoryController.cs
+++ b/Core/Controllers/InventoryController.cs
@@ -1,9 +1,140 @@
 using Core.Annotations;
+using Core.Generators;
+using Core.Helpers;
+using Core.Models.Eft.Common;
+using Core.Models.Eft.Inventory;
+using Core.Models.Eft.ItemEvent;
+using Core.Models.Enums;
+using Core.Models.Utils;
+using Core.Routers;
+using Core.Services;
+using Core.Utils;
+using Core.Utils.Cloners;
 
 namespace Core.Controllers;
 
 [Injectable]
 public class InventoryController
 {
-    // TODO
+    protected ISptLogger<InventoryController> _logger;
+    protected HashUtil _hashUtil;
+    protected RandomUtil _randomUtil;
+    protected HttpResponseUtil _httpResponseUtil;
+    protected PresetHelper _presetHelper;
+    protected InventoryHelper _inventoryHelper;
+    protected QuestHelper _questHelper;
+    protected HideoutHelper _hideoutHelper;
+    protected ProfileHelper _profileHelper;
+    protected PaymentHelper _paymentHelper;
+    protected TraderHelper _traderHelper;
+    protected DatabaseService _databaseService;
+    protected FenceService _fenceService;
+    protected RagfairOfferService _ragfairOfferService;
+    protected MapMarkerService _mapMarkerService;
+    protected LocalisationService _localisationService;
+    protected PlayerService _playerService;
+    protected LootGenerator _lootGenerator;
+    protected EventOutputHolder _eventOutputHolder;
+
+    public InventoryController(
+        ISptLogger<InventoryController> logger,
+        HashUtil hashUtil,
+        RandomUtil randomUtil,
+        HttpResponseUtil httpResponseUtil,
+        PresetHelper presetHelper,
+        InventoryHelper inventoryHelper,
+        QuestHelper questHelper,
+        HideoutHelper hideoutHelper,
+        ProfileHelper profileHelper,
+        PaymentHelper paymentHelper,
+        TraderHelper traderHelper,
+        DatabaseService databaseService,
+        FenceService fenceService,
+        RagfairOfferService ragfairOfferService,
+        MapMarkerService mapMarkerService,
+        LocalisationService localisationService,
+        PlayerService playerService,
+        LootGenerator lootGenerator,
+        EventOutputHolder eventOutputHolder,
+
+        ICloner cloner
+        )
+    {
+        _logger = logger;
+        _hashUtil = hashUtil;
+        _randomUtil = randomUtil;
+        _httpResponseUtil = httpResponseUtil;
+        _presetHelper = presetHelper;
+        _inventoryHelper = inventoryHelper;
+        _questHelper = questHelper;
+        _hideoutHelper = hideoutHelper;
+        _profileHelper = profileHelper;
+        _paymentHelper = paymentHelper;
+        _traderHelper = traderHelper;
+        _databaseService = databaseService;
+        _fenceService = fenceService;
+        _ragfairOfferService = ragfairOfferService;
+        _mapMarkerService = mapMarkerService;
+        _localisationService = localisationService;
+        _playerService = playerService;
+        _lootGenerator = lootGenerator;
+        _eventOutputHolder = eventOutputHolder;
+    }
+
+    public void MoveItem(PmcData pmcData, InventoryMoveRequestData moveRequest, string sessionID, ItemEventRouterResponse output)
+    {
+        if (output.Warnings.Count > 0)
+        {
+            return;
+        }
+
+        // Changes made to result apply to character inventory
+        var ownerInventoryItems = _inventoryHelper.GetOwnerInventoryItems(moveRequest, moveRequest.Item, sessionID);
+        if (ownerInventoryItems.SameInventory.GetValueOrDefault(false))
+        {
+            // Don't move items from trader to profile, this can happen when editing a traders preset weapons
+            if (moveRequest.FromOwner?.Type == "Trader" && !ownerInventoryItems.IsMail.GetValueOrDefault(false))
+            {
+                AppendTraderExploitErrorResponse(output);
+                return;
+            }
+
+            // Check for item in inventory before allowing internal transfer
+            var originalItemLocation = ownerInventoryItems.From.FirstOrDefault((item) => item.Id == moveRequest.Item);
+            if (originalItemLocation is null)
+            {
+                // Internal item move but item never existed, possible dupe glitch
+                AppendTraderExploitErrorResponse(output);
+                return;
+            }
+
+            var originalLocationSlotId = originalItemLocation?.SlotId;
+
+            var moveResult = _inventoryHelper.MoveItemInternal(pmcData, ownerInventoryItems.From, moveRequest, out var errorMessage);
+            if (!moveResult)
+            {
+                _httpResponseUtil.AppendErrorToOutput(output, errorMessage);
+                return;
+            }
+
+            // Item is moving into or out of place of fame dogtag slot
+            if (moveRequest.To.Container.StartsWith("dogtag")  || originalLocationSlotId.StartsWith("dogtag"))
+            {
+                _hideoutHelper.ApplyPlaceOfFameDogtagBonus(pmcData);
+            }
+        }
+        else
+        {
+            _inventoryHelper.MoveItemToProfile(ownerInventoryItems.From, ownerInventoryItems.To, moveRequest);
+        }
+    }
+
+    private void AppendTraderExploitErrorResponse(ItemEventRouterResponse output)
+    {
+        _httpResponseUtil.AppendErrorToOutput(
+            output,
+            _localisationService.GetText("inventory-edit_trader_item"),
+            (BackendErrorCodes)228
+        );
+    }
 }
diff --git a/Core/Helpers/InventoryHelper.cs b/Core/Helpers/InventoryHelper.cs
index d0746744..f76107c9 100644
--- a/Core/Helpers/InventoryHelper.cs
+++ b/Core/Helpers/InventoryHelper.cs
@@ -1,4 +1,4 @@
-using System.Text.Json.Serialization;
+using System.Text.Json.Serialization;
 using Core.Annotations;
 using Core.Models.Eft.Common;
 using Core.Models.Eft.Common.Tables;
@@ -6,12 +6,32 @@ using Core.Models.Eft.Inventory;
 using Core.Models.Eft.ItemEvent;
 using Core.Models.Spt.Config;
 using Core.Models.Spt.Inventory;
+using Core.Models.Utils;
+using Core.Services;
 
 namespace Core.Helpers;
 
 [Injectable]
 public class InventoryHelper
 {
+    protected ISptLogger<InventoryHelper> _logger;
+    protected ProfileHelper _profileHelper;
+    protected DialogueHelper _dialogueHelper;
+    protected LocalisationService _localisationService;
+
+    public InventoryHelper(
+        ISptLogger<InventoryHelper> logger,
+        ProfileHelper profileHelper,
+        DialogueHelper dialogueHelper,
+        LocalisationService localisationService
+        )
+    {
+        _logger = logger;
+        _profileHelper = profileHelper;
+        _dialogueHelper = dialogueHelper;
+        _localisationService = localisationService;
+    }
+
     /// <summary>
     /// Add multiple items to player stash (assuming they all fit)
     /// </summary>
@@ -49,7 +69,7 @@ public class InventoryHelper
     /// </summary>
     /// <param name="itemWithChildren">An item</param>
     /// <param name="foundInRaid">Item was found in raid</param>
-    protected void SetFindInRaidStatusForItem(Item[] itemWithChildren, bool foundInRaid)
+    protected void SetFindInRaidStatusForItem(List<Item> itemWithChildren, bool foundInRaid)
     {
         throw new NotImplementedException();
     }
@@ -236,17 +256,59 @@ public class InventoryHelper
     /// Based on the item action, determine whose inventories we should be looking at for from and to.
     /// </summary>
     /// <param name="request">Item interaction request</param>
-    /// <param name="sessionId">Session id / playerid</param>
+    /// <param name="item">Item being moved/split/etc to inventory</param>
+    /// <param name="sessionId">Session id / players Id</param>
     /// <returns>OwnerInventoryItems with inventory of player/scav to adjust</returns>
     public OwnerInventoryItems GetOwnerInventoryItems(
-        InventoryMoveRequestData request,
+        InventoryBaseActionRequestData request,
+        string item,
         string sessionId)
     {
-        throw new NotImplementedException();
+        var pmcItems = _profileHelper.GetPmcProfile(sessionId).Inventory.Items;
+        var scavProfile = _profileHelper.GetScavProfile(sessionId);
+        var fromInventoryItems = pmcItems;
+        var fromType = "pmc";
+
+        if (request.FromOwner is not null)
+        {
+            if (request.FromOwner.Id == scavProfile.Id)
+            {
+                fromInventoryItems = scavProfile.Inventory.Items;
+                fromType = "scav";
+            }
+            else if (request.FromOwner.Type.ToLower() == "mail")
+            {
+                // Split requests don't use 'use' but 'splitItem' property
+                fromInventoryItems = _dialogueHelper.GetMessageItemContents(request.FromOwner.Id, sessionId, item);
+                fromType = "mail";
+            }
+        }
+
+        // Don't need to worry about mail for destination because client doesn't allow
+        // users to move items back into the mail stash.
+        var toInventoryItems = pmcItems;
+        var toType = "pmc";
+
+        // Destination is scav inventory, update values
+        if (request.ToOwner?.Id == scavProfile.Id)
+        {
+            toInventoryItems = scavProfile.Inventory.Items;
+            toType = "scav";
+        }
+
+        // From and To types match, same inventory
+        var movingToSameInventory = fromType == toType;
+
+        return new OwnerInventoryItems{
+            From = fromInventoryItems,
+            To = toInventoryItems,
+            SameInventory = movingToSameInventory,
+            IsMail = fromType == "mail",
+        };
     }
 
     /// <summary>
-    /// Get a two dimensional array to represent stash slots
+    /// Get a two-dimensional array to represent stash slots
     /// 0 value = free, 1 = taken
     /// </summary>
     /// <param name="pmcData">Player profile</param>
@@ -303,7 +365,7 @@ public class InventoryHelper
     /// <param name="sourceItems">Inventory of the source (can be non-player)</param>
     /// <param name="toItems">Inventory of the destination</param>
     /// <param name="request">Move request</param>
-    public void MoveItemToProfile(Item[] sourceItems, Item[] toItems, InventoryMoveRequestData request)
+    public void MoveItemToProfile(List<Item> sourceItems, List<Item> toItems, InventoryMoveRequestData request)
     {
         throw new NotImplementedException();
     }
@@ -314,13 +376,63 @@ public class InventoryHelper
     /// <param name="pmcData">profile to edit</param>
     /// <param name="inventoryItems"></param>
     /// <param name="moveRequest">client move request</param>
+    /// <param name="errorMessage"></param>
     /// <returns>True if move was successful</returns>
-    public (bool success, string errorMessage) MoveItemInternal(
+    public bool MoveItemInternal(
         PmcData pmcData,
-        Item[] inventoryItems,
-        InventoryMoveRequestData moveRequest)
+        List<Item> inventoryItems,
+        InventoryMoveRequestData moveRequest,
+        out string errorMessage)
     {
-        throw new NotImplementedException();
+        errorMessage = string.Empty;
+        HandleCartridges(inventoryItems, moveRequest);
+
+        // Find item we want to 'move'
+        var matchingInventoryItem = inventoryItems.FirstOrDefault((item) => item.Id == moveRequest.Item);
+        if (matchingInventoryItem is null)
+        {
+            var noMatchingItemMesage = $"Unable to move item: { moveRequest.Item}, cannot find in inventory";
+            _logger.Error(noMatchingItemMesage);
+
+            errorMessage = noMatchingItemMesage;
+            return false;
+        }
+
+        _logger.Debug("${ moveRequest.Action} item: ${ moveRequest.item} from slotid: ${ matchingInventoryItem.slotId} to container: ${ moveRequest.to.container}");
+
+        // Don't move shells from camora to cartridges (happens when loading shells into mts-255 revolver shotgun)
+        if (matchingInventoryItem.SlotId?.Contains("camora_") is null && moveRequest.To.Container == "cartridges")
+        {
+            _logger.Warning(
+                _localisationService.GetText("inventory-invalid_move_to_container",
+                    new {
+                        slotId = matchingInventoryItem.SlotId,
+                        container = moveRequest.To.Container,
+                    }));
+
+            return true;
+        }
+
+        // Edit items details to match its new location
+        matchingInventoryItem.ParentId = moveRequest.To.Id;
+        matchingInventoryItem.SlotId = moveRequest.To.Container;
+
+        // Ensure fastpanel dict updates when item was moved out of fast-panel-accessible slot
+        UpdateFastPanelBinding(pmcData, matchingInventoryItem);
+
+        // Item has location property, ensure its value is handled
+        if (moveRequest.To.Location is not null) {
+            matchingInventoryItem.Location = moveRequest.To.Location;
+        } else
+        {
+            // Moved from slot with location to one without, clean up
+            if (matchingInventoryItem.Location is not null)
+            {
+                matchingInventoryItem.Location = null;
+            }
+        }
+
+        return true;
     }
 
     /// <summary>
@@ -330,13 +442,34 @@ public class InventoryHelper
     /// <param name="itemBeingMoved">item being moved</param>
     protected void UpdateFastPanelBinding(PmcData pmcData, Item itemBeingMoved)
     {
-        throw new NotImplementedException();
+        // Find matching _id in fast panel
+        
+        if (!pmcData.Inventory.FastPanel.TryGetValue(itemBeingMoved.Id, out var fastPanelSlot))
+        {
+            return;
+        }
+
+        // Get moved items parent (should be container item was put into)
+        var itemParent = pmcData.Inventory.Items.FirstOrDefault((item) => item.Id == itemBeingMoved.ParentId);
+        if (itemParent is null)
+        {
+            return;
+        }
+
+        // Reset fast panel value if item was moved to a container other than pocket/rig (cant be used from fastpanel)
+        List<string> slots = ["pockets", "tacticalvest"];
+        var wasMovedToFastPanelAccessibleContainer = slots.Contains(
+            itemParent?.SlotId?.ToLower() ?? "");
+        if (!wasMovedToFastPanelAccessibleContainer)
+        {
+            pmcData.Inventory.FastPanel[fastPanelSlot[0].ToString()] = "";
+        }
     }
 
     /// <summary>
     /// Internal helper function to handle cartridges in inventory if any of them exist.
     /// </summary>
-    protected void HandleCartridges(Item[] items, InventoryMoveRequestData request)
+    protected void HandleCartridges(List<Item> items, InventoryMoveRequestData request)
     {
         throw new NotImplementedException();
     }
diff --git a/Core/Models/Eft/Inventory/InventoryBaseActionRequestData.cs b/Core/Models/Eft/Inventory/InventoryBaseActionRequestData.cs
index 810d4311..94b2de02 100644
--- a/Core/Models/Eft/Inventory/InventoryBaseActionRequestData.cs
+++ b/Core/Models/Eft/Inventory/InventoryBaseActionRequestData.cs
@@ -1,9 +1,9 @@
-using System.Text.Json.Serialization;
+using System.Text.Json.Serialization;
 using Core.Models.Eft.Common.Request;
 
 namespace Core.Models.Eft.Inventory;
 
-public record InventoryBaseActionRequestData : BaseInteractionRequestData
+public abstract record InventoryBaseActionRequestData : BaseInteractionRequestData
 {
 }
 
diff --git a/Core/Models/Enums/BackendErrorCodes.cs b/Core/Models/Enums/BackendErrorCodes.cs
index 9799f808..b06ef368 100644
--- a/Core/Models/Enums/BackendErrorCodes.cs
+++ b/Core/Models/Enums/BackendErrorCodes.cs
@@ -2,89 +2,93 @@ namespace Core.Models.Enums;
 
 public enum BackendErrorCodes
 {
-    NONE = 0,
-    UNKNOWN_ERROR = 200,
-    NOT_AUTHORIZED = 201,
-    NEED_AUTHORIZATION_CODE = 209,
-    WRONG_AUTHORIZATION_CODE = 211,
-    NEED_CAPTCHA = 214,
-    NO_NEED_CAPTCHA = 215,
-    CAPTCHA_INVALID_ANSWER = 216,
-    CAPTCHA_FAILED = 218,
-    CAPTCHA_BRUTE_FORCED = 219,
-    NO_ROOM_IN_STASH = 223,
-    NICKNAME_NOT_UNIQUE = 225,
-    NICKNAME_NOT_VALID = 226,
-    UNSUPPORTED_CLIENT_VERSION = 232,
-    REPORT_NOT_ALLOWED = 238,
-    NICKNAME_IS_ABUSIVE = 241,
-    NICKNAME_CHANGE_TIMEOUT = 242,
-    NOT_ENOUGH_SPACE_TO_UNPACK = 257,
-    NOT_MODIFIED = 304,
-    HTTP_BAD_REQUEST = 400,
-    HTTP_NOT_AUTHORIZED = 401,
-    HTTP_FORBIDDEN = 403,
-    HTTP_NOT_FOUND = 404,
-    HTTP_METHOD_NOT_ALLOWED = 405,
-    UNKNOWN_TRADING_ERROR = 500,
-    HTTPNOTIMPLEMENTED = 501,
-    HTTPBADGATEWAY = 502,
-    HTTPSERVICEUNAVAILABLE = 503,
-    HTTPGATEWAYTIMEOUT = 504,
-    TRADEROUTOFMONEY = 505,
-    HTTPVARIANTALSONEGOTIATES = 506,
-    PRICECHANGED = 509,
-    TRADERDISABLED = 512,
-    ITEMHASBEENSOLD = 513,
-    NOTENOUGHSPACEFORMONEY = 518,
-    HTTPINVALIDSSLCERTIFICATE = 526,
-    UNKNOWNRAGFAIRERROR = 550,
-    UNKNOWNRAGFAIRERROR2 = 551,
-    UNKNOWNMATCHMAKERERROR = 600,
-    SESSIONPARAMETERSERROR = 601,
-    SESSIONLOST = 602,
-    SERVERNOTREGISTERED = 604,
-    UNKNOWNQUESTERROR = 700,
-    QUESTBADPARAM = 702,
-    QUESTNOTFOUND = 703,
-    QUESTISUNAVAILABLE = 704,
-    NOFREESPACEFORREWARDS = 705,
-    WRONGQUESTSTATUS = 706,
-    CANTCOMPLETEQUEST = 707,
-    UNKNOWNMAILERROR = 900,
-    TOOMANYFRIENDREQUESTS = 925,
-    UNKNOWNSCRIPTEXECUTIONERROR = 1000,
-    UNKNOWNREPAIRINGERROR = 1200,
-    UNKNOWNINSURANCEERROR = 1300,
-    UNKNOWNCURRENCYEXCHANGEERROR = 1400,
-    OFFERNOTFOUND = 1503,
-    NOTENOUGHSPACE = 1505,
-    OFFEROUTOFSTOCK = 1506,
-    OFFERSOLD = 1507,
-    RAGFAIRUNAVAILABLE = 1511,
-    BANNEDERRORCODE = 1513,
-    INSUFFICIENTNUMBERINSTOCK = 1516,
-    TOOMANYITEMSTOSELL = 1517,
-    INCORRECTCLIENTPRICE = 1519,
-    EXAMINATIONFAILED = 22001,
-    ITEMALREADYEXAMINED = 22002,
-    UNKNOWNNGINXERROR = 9000,
-    PARSERESPONSEERROR = 9001,
-    UNKNOWNMATCHMAKERERROR2 = 503000, // They have two of these...why :/
-    UNKNOWNGROUPERROR = 502000,
-    GROUPREQUESTNOTFOUND = 502002,
-    GROUPFULL = 502004,
-    PLAYERALREADYINGROUP = 502005,
-    PLAYERNOTINGROUP = 502006,
-    PLAYERNOTLEADER = 502007,
-    CANTCHANGEREADYSTATE = 502010,
-    PLAYERFORBIDDENGROUPINVITES = 502011,
-    LEADERALREADYREADY = 502012,
-    GROUPSENDINVITEERROR = 502013,
-    PLAYERISOFFLINE = 502014,
-    PLAYERISNOTSEARCHINGFORGROUP = 502018,
-    PLAYERALREADYLOOKINGFORGAME = 503001,
-    PLAYERINRAID = 503002,
-    LIMITFORPRESETSREACHED = 504001,
-    PLAYERPROFILENOTFOUND = 505001,
+    None,
+    UnknownError = 200,
+    NotAuthorized,
+    NeedAuthorizationCode = 209,
+    WrongAuthorizationCode = 211,
+    NeedCaptcha = 214,
+    NoNeedCaptcha,
+    CaptchaInvalidAnswer,
+    CaptchaFailed = 218,
+    CaptchaBruteForced,
+    NoRoomInStash = 223,
+    NicknameNotUnique = 225,
+    NicknameNotValid,
+    UnsupportedClientVersion = 232,
+    ReportNotAllowed = 238,
+    NicknameIsAbusive = 241,
+    NicknameChangeTimeout,
+    NotEnoughSpaceToUnpack = 257,
+    NotModified = 304,
+    HTTPBadRequest = 400,
+    HTTPNotAuthorized,
+    HTTPForbidden = 403,
+    HTTPNotFound,
+    HTTPMethodNotAllowed,
+    UnknownTradingError = 500,
+    HTTPNotImplemented,
+    HTTPBadGateway,
+    HTTPServiceUnavailable,
+    HTTPGatewayTimeout,
+    TraderOutOfMoney,
+    HTTPVariantAlsoNegotiates,
+    PriceChanged = 509,
+    TraderDisabled = 512,
+    ItemHasBeenSold,
+    NotEnoughSpaceForMoney = 518,
+    HTTPInvalidSSLCertificate = 526,
+    UnknownRagfairError = 550,
+    UnknownRagfairError2,
+    UnknownMatchMakerError = 600,
+    SessionParametersError,
+    SessionLost,
+    ServerNotRegistered = 604,
+    UnknownQuestError = 700,
+    QuestBadParam = 702,
+    QuestNotFound,
+    QuestIsUnavailable,
+    NoFreeSpaceForRewards,
+    WrongQuestStatus,
+    CantCompleteQuest,
+    UnknownMailError = 900,
+    TooManyFriendRequests = 925,
+    UnknownScriptExecutionError = 1000,
+    UnknownRepairingError = 1200,
+    UnknownInsuranceError = 1300,
+    UnknownCurrencyExchangeError = 1400,
+    OfferNotFound = 1503,
+    NotEnoughSpace = 1505,
+    OfferOutOfStock,
+    OfferSold,
+    RagfairUnavailable = 1511,
+    BannedErrorCode = 1513,
+    InsufficientNumberInStock = 1516,
+    TooManyItemsToSell,
+    IncorrectClientPrice = 1519,
+    ExaminationFailed = 22001,
+    ItemAlreadyExamined,
+    UnknownNginxError = 9000,
+    ParseResponseError,
+    UnknownMatchmakerError = 503000,
+    UnknownGroupError = 502000,
+    GroupRequestNotFound = 502002,
+    GroupFull = 502004,
+    PlayerAlreadyInGroup,
+    PlayerNotInGroup,
+    PlayerNotLeader,
+    CantChangeReadyState = 502010,
+    PlayerForbiddenGroupInvites,
+    LeaderAlreadyReady,
+    GroupSendInviteError,
+    PlayerIsOffline,
+    PlayerIsNotSearchingForGroup = 502018,
+    PlayerTooManyPartyRequests = 502021,
+    PlayerIsInRegularMode = 502032,
+    PlayerIsInPveMode,
+    PlayerAlreadyLookingForGame = 503001,
+    PlayerInRaid,
+    LimitForPresetsReached = 504001,
+    PlayerProfileNotFound = 505001,
+    NoArenaSync = 507006
 }
diff --git a/Core/Utils/HttpResponseUtil.cs b/Core/Utils/HttpResponseUtil.cs
index 78e08d60..66c55995 100644
--- a/Core/Utils/HttpResponseUtil.cs
+++ b/Core/Utils/HttpResponseUtil.cs
@@ -98,7 +98,7 @@ public class HttpResponseUtil
     public ItemEventRouterResponse AppendErrorToOutput(
         ItemEventRouterResponse output,
         string? message = null,
-        BackendErrorCodes errorCode = BackendErrorCodes.NONE
+        BackendErrorCodes errorCode = BackendErrorCodes.None
     )
     {
         if (string.IsNullOrEmpty(message))