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GSM Codes

Error code (hex)SummaryDescriptionUsually caused by
0No errorDelivery successful.
1unknownSubscriberThe MSISDN is not assigned by the operator at the moment.Network
2unknownBaseStationNetwork
3unknownMSCNetwork
5unidentifiedSubscriberIndicates that the MSC that should manage the MSISDN according to the HLR does not know the MSISDN. This is usually a sign for a technical issue inside of the destination network.Network
6absentsubscriberSMNetwork
7unknownEquipmentNetwork
8roamingNotAllowedNetwork
9illegalSubscriberThe MSISDN is not a subscriber of the target network or otherwise failed to authenticate correctly and is not allowed to receive SMS. This can indicate message filtering.Network
abearerServiceNotProvisionedNetwork
bteleserviceNotProvisionedUsually occurs if the carrier disabled sending of SMS to the receiver MSISDN.Network
cillegalEquipmentThis error usually indicates that the receiver handset is not able to receive messages or special types of messagesNetwork
dcallBarredCan indicate that the MSISDN was deactivated by the operator but other reasons were observed, too.Network
eforwardingViolationNetwork
fcug-RejectNetwork
10illegalSS-OperationNetwork
11ss-ErrorStatusNetwork
12ss-NotAvailableNetwork
13ss-SubscriptionViolationNetwork
14ss-IncompatibilityNetwork
15facilityNotSupportedCan indicate that a network note does not support incoming SMS. This can indicate message filtering.Network
17invalidTargetBaseStationNetwork
18noRadioResourceAvailableNetwork
19noHandoverNumberAvailableNetwork
1asubsequentHandoverFailureNetwork
1bPhone switched offThe phone is switched off.Network
1cincompatibleTerminalNetwork
1dshortTermDenialNetwork
1elongTermDenialNetwork
1fSubscriberBusyForMT-SMSThe MSISDN received another message at the very same time and was therefore not able to receive the message that experienced the error.Network
20Sm-DeliveryFailureSee 6XXX error codes.Network
21messageWaitingListFullPossible congestion in the target opeator’s HLR. May also be a bug in the target operator’s HLR.Network
22systemFailureGeneric error in destination network, can have multiple reasons.Network
23dataMissingNetwork
24unexpectedDataValueThe response of the destination operator for our signal was not as we expected it. This can indicate message filtering or a broken machine in the destination network.Network
25pw-RegistrationFailureNetwork
26negativePW-CheckNetwork
27noRoamingNumberAvailableNetwork
28tracingBufferFullNetwork
2bnumberOfPW-AttemptsViolationNetwork
2cnumberChangedNetwork
2dbusySubscriberNetwork
2enoSubscriberReplyNetwork
2fforwardingFailedNetwork
30or-NotAllowedNetwork
31ati-NotAllowedNetwork
32noGroupCallNumberAvailableNetwork
33resourceLimitationNetwork
34unauthorizedRequestingNetworkNetwork
35unauthorizedLCSClientNetwork
36positionMethodFailureNetwork
3aunknownOrUnreachableLCSClientNetwork
47unknownAlphabetNetwork
48ussd-BusyNetwork
56subscriberLocationReportNetwork
2100Unrecognized componentNetwork
2101Mistyped componentNetwork
2102Badly structured componentNetwork
2200Duplicate invoke IDNetwork
2201Unrecognized operationNetwork
2202Mistyped parameterNetwork
2203Resource limitationCongestion in the target network.Network
2204Initiating releaseNetwork
2205Unrecognized linked IDNetwork
2206Linked response unexpectedNetwork
2207Unexpected linked operationNetwork
2300Unrecognized invoke IDNetwork
2301Return Result unexpectedNetwork
2302Mistyped parameterNetwork
2400Unrecognized invoke IDNetwork
2401Return Error unexpectedNetwork
2402Unrecognized errorNetwork
2403Unexpected errorNetwork
2404Mistyped parameterNetwork
6000memoryCapacityExceededSIM card fullNetwork
6xxxHandset delivery failure6XXX error codes usually related to a handset or basestation issue but other reasons were observed, too.Network
6001equipmentProtocolErrorNetwork
6002equipmentNotSM-EquippedNetwork
6003unknownServiceCentreNetwork
6004sc-CongestionNetwork
6005invalidSME-AddressNetwork
6006subscriberNotSC-SubscriberNetwork
8000Unrecognized message typeNetwork
8001Unrecognized transaction IDNetwork
8002Badly formatted transaction portionNetwork
8003Incorrect transaction portionNetwork
8004Resource limitationCongestion in target network.Network
8008Node not reachableGeneral error. May, among other reasons, be a congestion in target network, on SS7 layer or unknown MSISDN range.Network
800bDialogue collisionUsually indicates congestions inside the destination network or en route.Network
8010Node not reachableRouting error, can indicate, e.g., congestions or missing routing data inside the international SS7 network.Network
a001No network responseA network node did not respond in time to sms77.io.Network
a002Message too longThe message exceeds the maximum size.sms77.io
cxxxThe Codes from c000 to c00f are compound codes, which can signal more then one state of the receiving number at once.The last digit gives the hexadecimal value for four bits that can all be set or not set. c000 means none of them are set, c00f means all are set. To find out which ones are set one has to find a sum of basic values that is equal to the compound value. E.g. c003 means c002 and c001 is true (1+2=3), c00d means c001, c004 and c008 is true (8+4+1=13=D)Network
c000See description for error code cxxxSee description for error code cxxxNetwork
c001sc-AddressNotIncludedSC address not included in message waiting list.Network
c002mnrf-SetMobile subscriber not reachable.Network
c003See description for error code cxxxSee description for error code cxxxNetwork
c004mcef-SetSIM card fullNetwork
c005See description for error code cxxxSee description for error code cxxxNetwork
c006See description for error code cxxxSee description for error code cxxxNetwork
c007See description for error code cxxxSee description for error code cxxxNetwork
c008mnrg-SetMobile station not reachable for GPRS.Network
c009See description for error code cxxxSee description for error code cxxxNetwork
c00aSee description for error code cxxxSee description for error code cxxxNetwork
c00bSee description for error code cxxxSee description for error code cxxxNetwork
c00dSee description for error code cxxxSee description for error code cxxxNetwork
d000Internal errorRouting information could not be processed.sms77.io
d001Customer blockedCustomer is not allowed to send at all or receiver is currently roaming in a network which is not accessible to customer.sms77.io
d002Destination blockedThe message could not be delivered because the destination operator is currently not available.sms77.io
d004Destination temporarily not availableOperator network physically not reachable for a longer period.Network
d00aDestination blocked and not reroutableTarget network currently not available or the destination operator is currently not accessible to customer.Network
d00cInsufficient routing rightsThe destination operator is not accessible to customer.sms77.io
d010Destination blocked by customerDestination network blocked by customers choice.sms77.io
d020providerNotAvailableThe destination network did not respond to sms77.io, possibly due to congestion.Network
e010Missing parameterThe destination operator responded to our signals with an empty signal. This can occur when a CDMA receiver is addressed.Network
e040TimeoutA network node en route or inside of the destination operator did not respond or did not respond in time.Network
e082Signalling errorSignalling error in the target network.Network
fc0aNo network responseA network node did not respond in time to sms77.io.Network
fc06Subscriber has opted out from this messaging serviceFor the selected destinations, sms77.io can indicate in the DLR if the subscriber has opted out from receiving messages for the respective service and as a consequence the message cannot be delivered.Network
fc07Message rejected by Chat AppThe destination Chat App rejected the message due to one or more incorrect parametersNetwork
fc08Not a Chat App userThe recipient is not a user of the respective Chat AppNetwork
ffddDestination blockedThe message could not be delivered because the destination operator is currently not available.sms77.io
ffdeDestination blockedThe message could not be delivered because the destination operator is currently not available.sms77.io
ffdfCustomer blockedCustomer is not allowed to send at all or receiver is currently roaming in a network which is not accessible to customer.sms77.io
ffe0Customer blockedCustomer is not allowed to send at all or receiver is currently roaming in a network which is not accessible to customer.sms77.io
ffe1Internal errorRouting information could not be processed.sms77.io
ffe5Destination blocked by customerDestination network is blocked by customers choice.sms77.io
fff0Destination blockedThe message could not be delivered because the destination operator is currently not available.sms77.io
ffffInternal error codeUsually stands for message expiration or rejected messages. The message retried in case of preventing excessive messaging being forwarded to one particular handset during a short time period.sms77.io
4xxxNetwork specific error codes4XXX error codes can indicate that the route was blocked by the destination operator but other reasons were observed, too.Network
81xxIncorrect message lengthNetwork
82xxMissing mandatory IENetwork
83xxIncorrect IE lengthNetwork
84xxBad parameter valueNetwork
85xxNo free dialoguesNetwork
86xxInvalid dialogue IDNetwork
87xxExceeded maximum lengthNetwork
88xxInvalid parameterNetwork
8axxAgent not registeredNetwork
89xxInappropriate transport messageNetwork
8cxxTC User not boundNetwork
exxxGSM adapter errorAn error occurred in a GSM adapter with unclear reason.Network
e140Node not reachableRouting error, can indicate, e.g., congestions or missing routing data inside the international SS7 network.Network
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