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Application-level error code 4001 Message - APP_NOT_FOUND Meaning - App not found. Please make sure the App ID and App Key are entered correctly and the correct node is set. 4002 Message - INSUFFICIENT_BALANCE Meaning - The account to which the application belongs has negative balance. Please recharge the account before using the application. 4004 Message - CCU_QUOTA_EXCEEDED Meaning - CCU has exceeded the current quota limit. Please upgrade to Business or Enterprise Edition. 4006 Message - JOIN_OR_CREATE_ROOM_NOT_ALLOWED_DUE_TO_APP_MSG_QUOTA_EXCEEDED Meaning - The maximum message sending rate in an application room exceeds 500 messages per second, prohibiting the creation of new rooms and joining other rooms. Service Fault Error Code 4200 Message - INTERNAL_ERROR Meaning - Internal server error. Contact technical support. 4202 Message - SERVICE_TEMPORARILY_UNAVAILABLE Meaning - Game service is temporarily unavailable. Please contact technical support. Room error code 4301 Message - ROOM_NOT_FOUND Meaning - Room could not be found. The following conditions will cause this error:No room matches the criteria during random matching. You can create a new room at this point. Room name was specified but the Room has been destroyed or the name is incorrect. 4302 Message - ROOM_FULL Meaning - Room is full. Please join another room. 4308 Message - ROOM_MEMBERSHIP_REQUIRED Meaning - Requires the current player to be in the room in order to perform the action. 4309 Message - ROOM_GAME_VERSION_OR_SDK_VERSION_NOT_MATCH Meaning - The Game Version or SDK Version of the user who created the Room does not match the Game Version or SDK Version of the user who is currently in the Room. This error occurs when you force join a room with a Room name that does not match your Game Version or SDK Version. 4311 Message - ROOM_ALREADY_EXISTS Meaning - The Room already exists. Create a room with another Room name. 4312 Message - ROOM_ATTRS_FULL Meaning - The attributes of the Room have reached the maximum length limit. 4313 Message - INVALID_ROOM_ATTR Meaning - The attribute of Room does not match the requirement. 4314 Message - ROOM_CLOSED Meaning - Room is closed. This error occurs when actively joining a room that is already closed. 4315 Message - TARGET_MASTER_CLIENT_OFFLINE Meaning - The target Master was not online when the Master was transferred. 4316 Message - INVALID_ROOM_ID Meaning - Room id is not in the required format. 4317 Message - SHOULD_LEAVE Meaning - The user joins another room without leaving the current room. Please call the leave method first before joining another room. 4324 Message - SHOULD_JOIN Meaning - The Client is not currently in any Room, but is trying to do some operation in a Room. Please join a Room first before doing the operation. 4326 Message - ROOM_ATTR_NOT_MATCHED Meaning - When you join a Room by matching Room attributes, there are no rooms matching the relevant attributes, so you can create a new room matching the relevant attributes. 4328 Message - OPERATION_NOT_ALLOWED Meaning - Not authorised to do this operation. 4329 Message - PLAYER_PROPERTIES_FULL Meaning - User properties are full. Please reduce the size of the properties. 4406 Message - NO_VALID_MESSAGE_RECEIVER Meaning - The message has no legitimate recipient. Other errors 4101 Message - DUPLICATE_LOGIN Meaning - On a connection that already has a user logged in, another login request is received from another user. 4102 Message - DUPLICATE_CONNECTIONS Meaning - The same user is logged in on different connections. 4013 Message - SIGNATURE_VERIFICATION_FAILED Meaning - Signature error. 4104 Message - INVALID_APP_ID_OR_CLIENT_ID Meaning - App id or Client id format is not legal. 4105 Message - SESSION_REQUIRED Meaning - The user sent a request without logging in. 4110 Message - FRAME_TOO_LONG Meaning - The received packet was too large and exceeded the limit. 4121 Message - INVALID_PARAMS Meaning - Wrong parameter. Please check the detail for more information.