Generic Errors
KErrNone  0  
KErrNotFound  -1 Unable to find the specified object 
KErrGeneral  -2 General (unspecified) error 
KErrCancel  -3 The operation was cancelled 
KErrNoMemory  -4 Not enough memory 
KErrNotSupported  -5 The operation requested is not supported 
KErrArgument  -6 Bad request 
KErrTotalLossOfPrecision  -7 Total loss of precision 
KErrBadHandle  -8 Bad object 
KErrOverflow  -9 Overflow 
KErrUnderflow  -10 Underflow 
KErrAlreadyExists  -11 Already exists 
KErrPathNotFound  -12 Unable to find the specified folder 
KErrDied  -13 Closed 
KErrInUse  -14 The specified object is currently in use by another program 
KErrServerTerminated  -15 Server has closed 
KErrServerBusy  -16 Server busy 
KErrCompletion  -17 Completion error 
KErrNotReady  -18 Not ready 
KErrUnknown  -19 Unknown error 
KErrCorrupt  -20 Corrupt 
KErrAccessDenied  -21 Access denied 
KErrLocked  -22 Locked 
KErrWrite  -23 Failed to write 
KErrDisMounted  -24 Wrong disk present 
KErrEof  -25 Unexpected end of file 
KErrDiskFull  -26 Disk full 
KErrBadDriver  -27 Bad device driver 
KErrBadName  -28 Bad name 
KErrCommsLineFail  -29 Comms line failed 
KErrCommsFrame  -30 Comms frame error 
KErrCommsOverrun  -31 Comms overrun error 
KErrCommsParity  -32 Comms parity error 
KErrTimedOut  -33 Timed out 
KErrCouldNotConnect  -34 Failed to connect 
KErrCouldNotDisconnect  -35 Failed to disconnect 
KErrDisconnected  -36 Disconnected 
KErrBadLibraryEntryPoint  -37 Bad library entry point 
KErrBadDescriptor  -38 Bad descriptor 
KErrAbort  -39 Interrupted 
KErrTooBig  -40 Too big 
KErrDivideByZero  -41 Divide by zero 
KErrBadPower  -42 Batteries too low 
KErrDirFull  -43 Folder full 
KErrHardwareNotAvailable  -44  
KErrSessionClosed  -45  
KErrPermissionDenied  -46  

Email Pop Errors
KPop3CannotConnect -170  The POP3 server refused to allow a connection 
KPop3InvalidUser -171  The POP3 server refused to allow a connection. Check your mailbox username 
KPop3InvalidLogin -172  The POP3 server refused to allow a connection. Check your mailbox username and password 
KPop3CannotCreateApopLogonString -173  Could not create secure logon string. Mailbox server may not support secure logon 
KPop3ProblemWithRemotePopServer -174  Problem communicating with POP3 server 
KPop3CannotOpenServiceEntry -175  Panic 
KPop3CannotSetRequiredFolderContext -176  Panic 
KPop3InvalidApopLogin -177  Panic 

Email Socket Errors
KImsKErrorDNSNotFound  -180  Could not find a DNS server. Please check the DNS address in the internet control panel  
KImsKErrorControlPanelLocked  -181  Could not connect to internet. Please ensure the internet control panel is closed  
KImskErrorISPOrIAPRecordNotFound  -182   
KImskErrorActiveSettingIsDifferent  -183  Unable to connect using the specified IAP, already connected to the Internet using a different IAP  
KImskSecuritySettingsFailed  -184   

Socket Errors
KErrNetUnreach  -190  Could not connect to the network. Currently unreachable  
KErrHostUnreach  -191  Could not connect to the specified server  
KErrNoProtocolOpt  -192  The specified server refuses the selected protocol  
KErrUrgentData  -193   
KErrWouldBlock  -1000  Conflicts with KErrExtended, but cannot occur in practice  

EMail IMAP Errors
KErrImapConnectFail  -200  Could not connect to IMAP4 server  
KErrImapServerFail  -201  The connection to the IMAP4 server has been broken  
KErrImapServerParse  -202   
KErrImapServerBusy  -203  The IMAP4 server refused to allow connection. The server is currently busy  
KErrImapServerVersion  -204  Could not connect to the IMAP server. The IMAP server is of the wrong version  
KErrImapSendFail  -205  Could not transmit to the IMAP4 server  
KErrImapBadLogon  -206  The IMAP4 server refused to allow a connection. Check your mailbox username and password  
KErrImapSelectFail  -207   
KErrImapWrongFolder  -208  Could not select an IMAP4 folder  
KErrImapServerNoSecurity  -209   
KErrImapServerLoginDisabled  -210  Login for this IMAP4 server has been disabled  
KErrImapTLSNegotiateFailed  -211  A secure connection cannot be made to this server  
KErrImapCantDeleteFolder  -212  This folder cannot be deleted  
KDmssUnknownErr  -221   
KDmssMailboxUnavailableErr  -222   
KDmssActionAbortedErr  -223   
KDmssActionNotTakenErr  -224   
KDmssCmdUnrecognisedErr  -225   
KDmssSyntaxErrorErr  -226   
KDmssCmdNotImplementedErr  -227   
KDmssBadSequenceErr  -228   
KDmssParamNotImplementedErr  -229   
KDmssMailboxNoAccessErr  -230   
KDmssExceededStorageErr  -231   
KDmssMailboxNameErr  -232   
KDmssTransactionFailedErr  -233   
KDmssTimeOutErr  -234   

Email SMTP Error
KSmtpNoMailFromErr  -240  Could not send email due to an invalid return email address. Check your email address in your account settings  
KSmtpUnknownErr  -241  Problem while sending email  
KSmtpBadMailFromAddress  -242  Email message has an invalid "From" address  
KSmtpBadRcptToAddress  -243  Email message has an invalid "To", "Cc" or "Bcc" address  
KSmtpLoginRefused  -244  SMTP server refused to allow connection  
KSmtpNoMsgsToSendWithActiveSettings  -245  Could not send email. The messages are destined for an account different from the currently connected one.  
KErrSmtpTLSNegotiateFailed  -246  Secure connection failed. Server may not accept secure connections or certificates may be expired.  
KImcmHTMLPartNotPopulated  -250   
KImcmInvalidMessageStructure -251   
KErrPop3TLSNegotiateFailed  -260   

BIO messaging
KBspInvalidMessage -500 "Corrupt message cannot be read." 
KBspSmartMessageInvalidToken -501 "Corrupt message cannot be read." 
KBspSmartMessageNoParserDefined -502 "Unknown message type cannot be read." 
KIacpUnknownSmsType -510 "Left token not starting with neither ’M’ nor ’I’." 
KIacpBIOMsgTypeNotSupported -511 "This Bio msg is not suppported.." 
KiacpMandatoryDataNotSet -512 "A mandatory Field/Value has not been found in SMS message." 
KIacpUnknownMailProtocol -513 "Mailbox configuration message refers to an unknown protocol." 
KIacpErrRightToken -514 "Improper right token i.e not equal t/f (True/False)." 
KIacpErrLeftToken -515 "Unknown Left Token i.e not starting with ’M’ for Mail or ’I’ for Internet configuration" 
KIacpErrSmsDataNotParsed -516 "Sms data should be parsed before commiting." 
KIacpErrSmsDataNotRestored -517 "Sms data should be parsed before commiting." 
KIacpScriptErrISPNotFound -518 "Mailbox configuration message specifies an unknown Internet Access Point." 
KIacpErrScriptNotDefined -519 "Script not included in sms." 
KIacpErrScriptNotFoundInDB -520 "There is no script in DB to append to.." 
KIacpErrScriptAlreadyAdd -521 "Script cannot be add more than ounce for a each Bio Msg." 

WAP
KWappErrXmlVer -601 "Wrong XML version" 
KWappErrOutbound -602 "Index in exceeds boundaries" 
KWappErrStringTable -603 "Bad String table reference" 
KWappErrEOS -604 "Reached the end of a key descriptor" 
KWappErrUnexpectedValue -605 "Expecting a different tag or content/attributes" 
KWappErrNoAttributes -606 "Expecting attributes- missing" 
KWappErrMandatoryTagMissing -607 "Search for a mandatory tag failed" 
KWappErrStoreNotFound -608 "No store attached to this entry" 
KWappErrMsgUnparsed -609 "Trying to process a message which is unparsed" 
KWappErrUnrecognised -610 "Token or string is not a recognised value" 
KWappErrNullValue -611 "Variable is null or has not been intialised" 
KWappErrContent -612 "Empty element, particularly a problem if it’s an empty characteristic- has no PARMS" 
KWappErrNoDBRecords -613 "Could not find a first record in the COMMDB" 
KWappErrNotSupported -614 "Not Supported - WAP specific" 
KWappErrBadMessage -615 "Data content/format of message is invalid" 
KWappErrNoTermination -616 "Terminating byte missing from string or data element." 

More Wap errors can be found in the ranges -5300..-5500 and -10000..-10025. See below.

BAFL
KErrExtended -1000  
KErrExtendedWithText -1001 
KLeaveWithoutAlert -1002 
KLeaveExit -1003 

ETEL Errors
KErrEtelNotCallOwner  -2000  
KErrEtelDuplicatePhoneName  -2001  
KErrEtelAlreadyCallOwner  -2002  
KErrEtelNoCarrier  -2003 "Problem communicating receiving device. Call was unexpectedly dropped"  
KErrEtelBusyDetected  -2004 "Phone number is busy. Wait before trying again"  
KErrEtelNoClientInterestedInThisCall  -2005  
KErrEtelInitialisationFailure  -2006  
KErrEtelCallNotActive  -2007  
KErrEtelNoAnswer  -2008 "Call was not answered"  
KErrEtelNoDialTone  -2009  
KErrEtelConfigPortFailure  -2010  
KErrEtelFaxChunkNotCreated  -2011  
KErrEtelNotFaxOwner  -2012  
KErrEtelPortNotLoanedToClient  -2013  
KErrEtelWrongModemType  -2014  
KErrEtelUnknownModemCapability  -2015  
KErrEtelAnswerAlreadyOutstanding  -2016  
KErrEtelModemNotDetected  -2017 "Phone is turned off or not ready. Check phone and try again"  
KErrEtelModemSettingsCorrupt  -2018  
KErrEtelPortAlreadyLoaned  -2019 "The Data port is in use by another call or application."  
KErrEtelCallAlreadyActive  -2020 "Another call active. Close it before opening a new one"  

NetDial Errors
KErrExitNoModem -3001 "No response from phone. Ensure phone is switched on" 
KErrExitModemError -3002 "Problem communicating with Internet service’s modem" 
KErrExitLoginFail -3003 "Internet username or password is incorrect."  
KErrExitScriptTimeOut -3004 "Internet service login script timed out. Internet service login script may be incorrect."  
KErrExitScriptError -3005 "Problem with Internet service login script. Internet service login script may be incorrect."  
KErrNetDialDatabaseDefaultUndefined -3006 "No Internet Access Points are defined"  
KErrNetDialDatabaseTypeUnknown -3007 "No Internet Access Points are defined"  
KErrNetDialDatabaseNotFound -3008 "No Internet Access Points are defined"  
KErrNetDialHscsdNotSupported -3009  

TCP/IP (v4)
KErrIfAuthenticationFailure -3050  "Internet username or password is incorrect"  
KErrIfAuthNotSecure -3051  "Internet service server only allows plain text authentication. This is currently disabled.  
KErrIfAccountDisabled -3052  "Could not connect to Internet service. Your account has been disabled"  
KErrIfRestrictedLogonHours -3053  "Could not connect to Internet service. Your account is only active during restricted hours"  
KErrIfPasswdExpired -3054  "Could not connect to Internet service. Your Internet password has expired"  
KErrIfNoDialInPermission -3055  "Could not connect to Internet service. Your do not have dial-in permission"  
KErrIfChangingPassword -3056   
KErrIfCallbackNotAcceptable -3057  "Could not connect to Internet service. Callback is not supported"  
KErrIfDNSNotFound -3058  "Could not find specified Internet server"  
KErrIfLRDBadLine -3059  "Bad line to Internet service dropped"  
KErrIfNoServerPresent -3060   
KErrIfRemoteDisconnected -3061   

More TCP/IP errors below (in the -5100 range).

GenConn
KErrGenConnDatabaseDefaultUndefined -3606  "No Internet accounts have been set up. Set up an account in Control panel."  
KErrGenConnDatabaseTypeUnknown -3607  "CommDb error"  
KErrGenConnDatabaseNotFound -3608  "CommDb error"  
KErrGenConnNoGPRSNetwork -3609  "No Packet network available"  
KErrGenConnIncorrectMSClass -3610  "Phone capabilities insufficient for required services"  
KErrGenConnInadequateSignalStrengh -3611  "Signal strength too low for connection, try again later"  
KErrGenConnStateMachineNotAvailable -3612  "State Machine not available for connection"  

Etel GSM Errors
Radio Resource Layer (GSM 4.08)  
KErrGsmRRUnspecifedAbnormalRelease  -4001 
KErrGsmRRChannelUnacceptable  -4002 
KErrGsmRRTimerExpired  -4003 
KErrGsmRRNoActivityOnRadioPath  -4004 
KErrGsmRRPreEmptiveRelease  -4005 
KErrGsmRRCallAlreadyCleared  -4065 
KErrGsmRRInvalidMessage  -4095 
KErrGsmRRNonExistentMessage  -4097 
KErrGsmRRIncompatibleMessageWithCallState  -4098 
KErrGsmRRInvalidInformationElement  -4100 
KErrGsmRRUnspecifiedProtocolError  -4111 
Mobility Management Layer (GSM 4.08)  
KErrGsmMMUnallocatedTmsi  -4129 
KErrGsmMMImsiUnknownInHlr  -4130 
KErrGsmMMIllegalMs  -4131 
KErrGsmMMImsiUnknownInVlr  -4132 
KErrGsmMMImeiNotAccepted  -4133 
KErrGsmMMIllegalMe  -4134 
KErrGsmMMPlmnNotAllowed  -4139 
KErrGsmMMLocationAreaNotAllowed  -4140 
KErrGsmMMRoamingNotAllowedInThisLocationArea  -4141  
KErrGsmMMNoSuitableCellsInArea  -4143 
KErrGsmMMNetworkFailure  -4145  
KErrGsmMMMacFailure  -4148 
KErrGsmMMSynchFailure  -4149 
KErrGsmMMCongestion  -4150 
KErrGsmMMGsmAuthenticationUnacceptable  -4151 
KErrGsmMMServiceOptionNotSupported  -4160 
KErrGsmMMServiceOptionNotSubscribed  -4161