> For the complete documentation index, see [llms.txt](https://docs.proudnet.com/proudnet.eng/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.proudnet.com/proudnet.eng/proudnet-note/notes/error_message_list.md).

# List of error messages

## List of error codes

<table data-full-width="false"><thead><tr><th width="355">Error codes</th><th>Description</th></tr></thead><tbody><tr><td>ErrorType_Ok</td><td>Success</td></tr><tr><td>ErrorType_Unexpected</td><td>Exception raised</td></tr><tr><td>ErrorType_AlreadyConnected</td><td>Already connected</td></tr><tr><td>ErrorType_TCPConnectFailure</td><td>TCP connection failure</td></tr><tr><td>ErrorType_InvalidSessionKey</td><td>Invalid key</td></tr><tr><td>ErrorType_EncryptFail</td><td>Encoding failure</td></tr><tr><td>ErrorType_DecryptFail</td><td>Hackers sent corrupted data or failed to decode it</td></tr><tr><td>ErrorType_ConnectServerTimeout</td><td>Server connection timeout</td></tr><tr><td>ErrorType_ProtocolVersionMismatch</td><td>Different protocol versions for connecting to the server</td></tr><tr><td>ErrorType_InvalidLicense</td><td>Invalid licenses</td></tr><tr><td>ErrorType_NotifyServerDeniedConnection</td><td>Server intentionally refuses connection</td></tr><tr><td>ErrorType_Reserved01</td><td>Successful server connection</td></tr><tr><td>ErrorType_DisconnectFromRemote</td><td>Communication host disconnected</td></tr><tr><td>ErrorType_DisconnectFromLocal</td><td>Host disconnected</td></tr><tr><td>ErrorType_Reserved02</td><td>There are factors that can lead to dangerous situations</td></tr><tr><td>ErrorType_UnknownAddrPort</td><td>Unknown Internet address</td></tr><tr><td>ErrorType_Reserved03</td><td>Insufficient server preparation</td></tr><tr><td>ErrorType_ServerPortListenFailure</td><td>Unable to start receiving server socket. Make sure that the TCP or UDP socket is already a port in use.</td></tr><tr><td>ErrorType_AlreadyExists</td><td>Objects that already exist</td></tr><tr><td>ErrorType_PermissionDenied</td><td>Inaccessible</td></tr><tr><td>ErrorType_BadSessionGuid</td><td>Invalid Session Guid</td></tr><tr><td>ErrorType_InvalidCredential</td><td>Invalid credentials</td></tr><tr><td>ErrorType_InvalidHeroName</td><td>Invalid Hero Name</td></tr><tr><td>ErrorType_Reserved06</td><td>Problems after unlocked loading is locked</td></tr><tr><td>ErrorType_Reserved07</td><td>The output parameter, adjustedGamerIDNotFilled, is empty.</td></tr><tr><td>ErrorType_Reserved08</td><td>The player character does not exist.</td></tr><tr><td>ErrorType_UnitTestFailed</td><td>Unit test failure</td></tr><tr><td>ErrorType_P2PUdpFailed</td><td>P2P UDP communication is blocked.</td></tr><tr><td>ErrorType_ReliableUdpFailed</td><td>Reliable Udp failure</td></tr><tr><td>ErrorType_ServerUdpFailed</td><td>Client-server UDP communication is blocked.</td></tr><tr><td>ErrorType_NoP2PGroupRelation</td><td>There are no more P2P groups to belong to together.</td></tr><tr><td>ErrorType_ExceptionFromUserFunction</td><td>A user-defined function (RMI receiving routine or event handler) throws an exception</td></tr><tr><td>ErrorType_UserRequested</td><td>Errors due to user requests</td></tr><tr><td>ErrorType_InvalidPacketFormat</td><td>Invalid packet type. The communication host has been hacked or there is a bug.</td></tr><tr><td>ErrorType_TooLargeMessageDetected</td><td>Message size is large.</td></tr><tr><td>ErrorType_Reserved09</td><td>Untrusted messages cannot be encrypted.</td></tr><tr><td>ErrorType_ValueNotExist</td><td>Non-existent values</td></tr><tr><td>ErrorType_TimeOut</td><td>Timeout</td></tr><tr><td>ErrorType_LoadedDataNotFound</td><td>The loaded data was not found.</td></tr><tr><td>ErrorType_SendQueueIsHeavy</td><td>The transfer queue is too large.</td></tr><tr><td>ErrorType_TooSlowHeartbeatWarning</td><td>HeartBeat is slower than average.</td></tr><tr><td>ErrorType_CompressFail</td><td>Message Compression Failure</td></tr><tr><td>ErrorType_LocalSocketCreationFailed</td><td>The client socket could not be received or UDP could not be prepared. Need to check if there is a limit to the number of sockets per process and if TCP or UDP sockets are in use</td></tr><tr><td>Error_NoneAvailableInPortPool</td><td>Failed to bind to a local port in the Port Pool. Make sure the Port Pool value is sufficient.</td></tr><tr><td>ErrorType_InvalidPortPool</td><td>Invalid port range. Set the ports to 0 (random port binding) or check for duplicates.</td></tr><tr><td>ErrorType_InvalidHostID</td><td>Invalid HostID</td></tr><tr><td>ErrorType_MessageOverload</td><td>Messages accumulate faster than they can be processed. Check whether you are sending too many messages or whether your message processing routines are running too slowly.</td></tr><tr><td>ErrorType_DatabaseAccessFailed</td><td>DB access failed. You can see more details in the comment variable.</td></tr><tr><td>ErrorType_OutOfMemory</td><td>Low memory</td></tr><tr><td>ErrorType_AutoConnectionRecoveryFailed</td><td>The connection to the server was lost and the connection recovery feature was activated but failed.</td></tr></tbody></table>

## Comment message list

<table data-full-width="false"><thead><tr><th width="210">Message</th><th width="199.33333333333337">Error codes</th><th>Description</th></tr></thead><tbody><tr><td>%d bytes in send queue</td><td>ErrorType_SendQueueIsHeavy</td><td>When the transmission queue is full of too many messages, it notifies the full capacity. OnWarning occurs</td></tr><tr><td>(AddrPort) is not an IPv4 address</td><td>ErrorType_UnknownAddrPort</td><td>Address acquisition fails when converting to IPv4 addresses</td></tr><tr><td>Bad format in NotifyServerConnectSuccess</td><td>ErrorType_InvalidPacketFormat</td><td>Failed to connect to the server after sending a connection request from the client to the server</td></tr><tr><td>Before OnJoinServerComplete with fail, we got DNS lookup failure. Error=d</td><td>ErrorType_Unexpected</td><td>DNS lookup fails while connecting from client to server</td></tr><tr><td>blocked method but no active event</td><td>ErrorType_Unexpected</td><td>OnWarning Raised When DBCache2 Server Responds to DBCache2 Client</td></tr><tr><td>BlockedAddData failed! Call is bug in UserWorkerThread</td><td>ErrorType_Unexpected</td><td>Call fails on DBCache2 client</td></tr><tr><td>BlockedAddData failed! NodeData that confronts OwnerUUID cannot be found.</td><td>ErrorType_BadSessionGuid</td><td>AddData Failed on DBCache2 Client</td></tr><tr><td>BlockedAddData failed! NodeData that confronts RootUUID cannot be found.</td><td>ErrorType_BadSessionGuid</td><td>AddData Failed on DBCache2 Client</td></tr><tr><td>BlockedRecursiveUpdateData failed! Call is bug in UserWorkerThread!</td><td>ErrorType_Unexpected</td><td>RemoveData Failed on DBCache2 Client</td></tr><tr><td>BlockedRecursiveUpdateData failed! NodeData that confronts RootUUID cannot be found.</td><td>ErrorType_BadSessionGuid</td><td>RecursiveUpdateData fails on DBCache2 client</td></tr><tr><td>BlockedRemoveData failed! Call is bug in UserWorkerThread!</td><td>ErrorType_Unexpected</td><td>RemoveData Failed on DBCache2 Client</td></tr><tr><td>BlockedRemoveData failed! NodeData that confronts RootUUID cannot be found.</td><td>ErrorType_BadSessionGuid</td><td>RemoveData Failed on DBCache2 Client</td></tr><tr><td>BlockedRemoveData failed! NodeData that confronts UUID cannot be found.</td><td>ErrorType_BadSessionGuid</td><td>RemoveData Failed on DBCache2 Client</td></tr><tr><td>BlockUpdateData failed! Call is bug in UserWorkerThread!</td><td>ErrorType_Unexpected</td><td>UpdateData Failed on DBCache2 Client</td></tr><tr><td>BlockUpdateData failed! NodeData that confronts RootUUID cannot be found.</td><td>ErrorType_BadSessionGuid</td><td>UpdateData Failed on DBCache2 Client</td></tr><tr><td>BlockUpdateData failed! NodeData that confronts UUID cannot be found.</td><td>ErrorType_BadSessionGuid</td><td>UpdateData Failed on DBCache2 Client</td></tr><tr><td>Cannot bind TCP socket to a local address!</td><td>ErrorType_TCPConnectFailure</td><td>When the client fails to create a socket to connect to the server, the connection fails and OnError occurs.</td></tr><tr><td>Cannot send messages unless connection to server exists!</td><td>ErrorType_PermissionDenied</td><td>When sending a message while disconnected from the server, message transmission fails and OnError occurs.</td></tr><tr><td>Certification Failed to DB Cache</td><td>ErrorType_InvalidSessionKey</td><td>Client connection fails when responding to a client on the DBCache2 server</td></tr><tr><td>checksum failure.</td><td>ErrorType_DecryptFail</td><td>Failed to decrypt ByteArray or message</td></tr><tr><td>Connected to server successfully, but we cannot get DNS lookup. ErrorCode:d</td><td>ErrorType_Unexpected</td><td>OnError occurs when the client connects to the server.</td></tr><tr><td>CStartServerParameter.m_enableP2PEncryptedMessaging=false. P2P Messaging can not encrypted</td><td>ErrorType_EncryptFail</td><td>OnError occurs when sending a message</td></tr><tr><td>Current loaded data owner as DB cache client denied the handover.</td><td>ErrorType_PermissionDenied</td><td>DBcache client fails to load data after making a request to the server</td></tr><tr><td>Data (root=s) is already isolated.</td><td>ErrorType_PermissionDenied</td><td>Adding to the list of failures when loading data from the DB cache server</td></tr><tr><td>decryptCount1 read failed</td><td>ErrorType_DecryptFail</td><td>Decryption fails when receiving an encrypted message</td></tr><tr><td>decryption failure 1</td><td>ErrorType_DecryptFail</td><td>Discarding messages when they are out of order after receiving encrypted messages</td></tr><tr><td>Decryption result is larger! Memory corruption may occur</td><td>ErrorType_DecryptFail</td><td>Decryption fails when the decrypted block is larger than the encrypted block</td></tr><tr><td>DenyUnloadData is called for not-loaded data.</td><td>ErrorType_LoadedDataNotFound</td><td>OnWarning occurs when DBCache2 client requests data unload from server</td></tr><tr><td>DNS lookup failure. error code=(Error Code)</td><td>ErrorType_TCPConnectFailure</td><td>Failed to look up server IP from client</td></tr><tr><td>Error</td><td>ErrorType_DecryptFail</td><td>Decryption fails using RSA algorithm</td></tr><tr><td>Error : NotifyAddDataSuccess: InsertChild failed.</td><td>ErrorType_Unexpected</td><td>OnWarning occurs on DBCache2 server</td></tr><tr><td>Error : NotifyAddDataSuccess: OwnerNode not found.</td><td>ErrorType_Unexpected</td><td>OnWarning occurs on DBCache2 server</td></tr><tr><td>Error : UnilateralMoveData MovePropNode Fail</td><td>ErrorType_ValueNotExist</td><td>OnWarning occurs in DBCache2 client</td></tr><tr><td>Error : UnilateralMoveData RemoveNode Fail</td><td>ErrorType_Unexpected</td><td>OnWarning occurs in DBCache2 client</td></tr><tr><td>Error : UnilateralRemoveData failed to remove node.</td><td>ErrorType_Unexpected</td><td>OnWarning occurs in DBCache2 client</td></tr><tr><td>Failed to create credential.</td><td>ErrorType_EncryptFail</td><td>Client fails to communicate on first contact with server</td></tr><tr><td>Failed to create SessionKey.</td><td>ErrorType_EncryptFail</td><td>Client fails to communicate on first contact with server</td></tr><tr><td>FATAL: new UDP socket - Cannot create UDP socket! Cannot get TCP NIC address (AddrPort).</td><td>ErrorType_LocalSocketCreationFailed</td><td>Failed to create a UDP socket to the server when creating a UDP socket on the client</td></tr><tr><td>I/O length=d, error code=d</td><td>ErrorType_DisconnectFromRemote</td><td>Terminating a connection during socket cleanup</td></tr><tr><td>Incorrect Packet</td><td>ErrorType_DecryptFail</td><td>Failed decryption by checking for decryption attempts and packet tampering using the RSA algorithm</td></tr><tr><td>input is NULL.</td><td>ErrorType_DecryptFail</td><td>Decryption failed because no encrypted message was entered</td></tr><tr><td>input is NULL.</td><td>ErrorType_EncryptFail</td><td>Encryption fails when there is nothing to encrypt</td></tr><tr><td>input length is invalid.</td><td>ErrorType_DecryptFail</td><td>Decryption failed because the length of the encrypted message was too short</td></tr><tr><td>insufficient output buffer.</td><td>ErrorType_EncryptFail</td><td>Encryption failed because the space to write the encrypted message is smaller than the size of the original message</td></tr><tr><td>invalid input length.</td><td>ErrorType_EncryptFail</td><td>Encryption failed because the original message block size is less than zero</td></tr><tr><td>Invalid Root Table Name.</td><td>ErrorType_UserRequested</td><td>Add to fail list on DBCache2 server</td></tr><tr><td>is isolated.</td><td>ErrorType_UserRequested</td><td>Abandon loading data from the DBCache2 server</td></tr><tr><td>key for fast encryption does not exist.</td><td>ErrorType_DecryptFail</td><td>Decryption fails because the key for decryption is missing</td></tr><tr><td>key for fast encryption does not exist.</td><td>ErrorType_EncryptFail</td><td>Encryption fails because there is no key for encryption</td></tr><tr><td>Loading data failure. s</td><td>ErrorType_Unexpected</td><td>DBCache2 server failed to load data from DB, add to fail list</td></tr><tr><td>Make sure that enableP2PEncryptedMessaging is true.</td><td>ErrorType_DecryptFail</td><td>Decryption fails because there is no key for decryption</td></tr><tr><td>MessageType:d at location NC.PNL</td><td>ErrorType_InvalidPacketFormat</td><td>OnError is raised after receiving a message from the client</td></tr><tr><td>NLM1</td><td>ErrorType_InvalidLicense</td><td>Unable to connect to server and client due to license issues</td></tr><tr><td>Non-exclusive data access is denied.</td><td>ErrorType_PermissionDenied</td><td>Failed to load data on a DBCache2 server that did not allow non-exclusive access to data</td></tr><tr><td>NPDC</td><td>ErrorType_NotifyServerDeniedConnection</td><td>When connecting from the client to the server, the connection fails and an OnWarning occurs.</td></tr><tr><td>NPVM1</td><td>ErrorType_ProtocolVersionMismatch</td><td>Connection fails if the client uses a different version than the server when connecting to the server</td></tr><tr><td>output is NULL.</td><td>ErrorType_DecryptFail</td><td>Decryption failed with NULL space to write the decrypted message</td></tr><tr><td>output is NULL.</td><td>ErrorType_EncryptFail</td><td>Encryption fails because there is no space to store the encrypted output</td></tr><tr><td>output length is invalid.</td><td>ErrorType_DecryptFail</td><td>Decryption failed because the space to write the decrypted message is smaller than the size of the encrypted message</td></tr><tr><td>Packet compression failed! Error code=d</td><td>ErrorType_CompressFail</td><td>Message compression fails when sending message, OnError occurs</td></tr><tr><td>Please Check Encrypt Error CStartServerParameter</td><td>ErrorType_EncryptFail</td><td>Encryption fails when sending data from the client</td></tr><tr><td>Received datagram from UDP became inconsistent</td><td>ErrorType_InvalidPacketFormat, ErrorType_TooLargeMessageDetected</td><td>OnWarning occurs when receiving UDP message</td></tr><tr><td>Received stream from TCP server became inconsistent</td><td>ErrorType_InvalidPacketFormat, ErrorType_TooLargeMessageDetected</td><td>Terminate the connection when a TCP message is received</td></tr><tr><td>Remote detected no receive.</td><td>ErrorType_ConnectServerTimeout</td><td>Connection fails when a client requests a connection to the server</td></tr><tr><td>RMI (name=s)</td><td>ErrorType_NotImplementedRmi</td><td>RMI Call Failure</td></tr><tr><td>RootUUID is not valid</td><td>ErrorType_UserRequested</td><td>Failed to load data from the DBCache2 server</td></tr><tr><td>RootUUID not found.</td><td>ErrorType_LoadedDataNotFound</td><td>OnException occurs when data load fails from DBCache2 server</td></tr><tr><td>RootUUID not found. s</td><td>ErrorType_LoadedDataNotFound</td><td>OnException occurs when data load fails from DBCache2 server</td></tr><tr><td>sendQueue dBytes</td><td>ErrorType_SendQueueIsHeavy</td><td>OnWarning occurs when the transmission queue is filled with too many messages</td></tr><tr><td>Server UDP holepunch OK, but we cannot do DNS look up. Error code = d</td><td>ErrorType_Unexpected</td><td>OnError occurs when hole-punching from the client to the server</td></tr><tr><td>Socket accept fail. socket error=(SocketErrorCode)</td><td>ErrorType_LocalSocketCreationFailed</td><td>Socket creation failed, error code is based on WSAGetLastError()</td></tr><tr><td>Stream Extract Error at Reliable UDP</td><td>ErrorType_InvalidPacketFormat, ErrorType_TooLargeMessageDetected</td><td>OnError occurs when sending and receiving reliable UDP from the client</td></tr><tr><td>TCP graceful disconnect, NetClient.Disconnect() or NetServer.CloseConnection() has been called.</td><td>ErrorType_DisconnectFromLocal</td><td>Failed to receive a message while processing connection termination (after calling Disconnect, CloseConnection)</td></tr><tr><td>TCP graceful disconnect.</td><td>ErrorType_DisconnectFromRemote</td><td>Terminating a connection during socket cleanup</td></tr><tr><td>The data does not exist.</td><td>ErrorType_LoadedDataNotFound</td><td>DBCache2 client fails to load data</td></tr><tr><td>time out</td><td>ErrorType_TimeOut</td><td>AddData Failed on DBCache2 Client</td></tr><tr><td>Too long elapsed time in NetClient heartbeat thread (%3.31f sec)</td><td>ErrorType_TooSlowHeartbeatWarning</td><td>When the client connects to the server, the connection fails and OnError occurs</td></tr><tr><td>Trial count:d, Arbitrary port number used: d</td><td>Error_NoneAvailableInPortPool</td><td>If the port set during UDP hole punching is unavailable, random UDP port binding occurs and OnWarning occurs</td></tr><tr><td>UDP socket for peer connection</td><td>ErrorType_LocalSocketCreationFailed</td><td>When creating a UDP socket on the client, UDP socket creation for p2p fails, OnWarning occurs</td></tr><tr><td>UDP socket for server connection</td><td>ErrorType_LocalSocketCreationFailed</td><td>When creating a UDP socket on the client, the creation of a UDP socket towards the server fails and OnWarning occurs</td></tr><tr><td>Unexpected: TCP-connected socket has no local address</td><td>ErrorType_UnknownAddrPort</td><td>OnError occurs when the client receives its local address abnormally after connecting to the server</td></tr><tr><td>We stopped socket I/O already.</td><td>ErrorType_DisconnectFromLocal</td><td>Connection terminated during socket cleanup</td></tr><tr><td>ExclusiveLoadNewData cannot be used when loading data that already exists.</td><td>ErrorType_AlreadyExists</td><td>Load failure when loading data from DBCacheServer</td></tr></tbody></table>

<br>