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GSM Codes

Error code (hex) Summary Description Usually caused by
0 No error Delivery successful.
1 unknownSubscriber The MSISDN is not assigned by the operator at the moment. Network
2 unknownBaseStation Network
3 unknownMSC Network
5 unidentifiedSubscriber Indicates 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
6 absentsubscriberSM Network
7 unknownEquipment Network
8 roamingNotAllowed Network
9 illegalSubscriber The 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
a bearerServiceNotProvisioned Network
b teleserviceNotProvisioned Usually occurs if the carrier disabled sending of SMS to the receiver MSISDN. Network
c illegalEquipment This error usually indicates that the receiver handset is not able to receive messages or special types of messages Network
d callBarred Can indicate that the MSISDN was deactivated by the operator but other reasons were observed, too. Network
e forwardingViolation Network
f cug-Reject Network
10 illegalSS-Operation Network
11 ss-ErrorStatus Network
12 ss-NotAvailable Network
13 ss-SubscriptionViolation Network
14 ss-Incompatibility Network
15 facilityNotSupported Can indicate that a network note does not support incoming SMS. This can indicate message filtering. Network
17 invalidTargetBaseStation Network
18 noRadioResourceAvailable Network
19 noHandoverNumberAvailable Network
1a subsequentHandoverFailure Network
1b Phone switched off The phone is switched off. Network
1c incompatibleTerminal Network
1d shortTermDenial Network
1e longTermDenial Network
1f SubscriberBusyForMT-SMS The MSISDN received another message at the very same time and was therefore not able to receive the message that experienced the error. Network
20 Sm-DeliveryFailure See 6XXX error codes. Network
21 messageWaitingListFull Possible congestion in the target opeator’s HLR. May also be a bug in the target operator’s HLR. Network
22 systemFailure Generic error in destination network, can have multiple reasons. Network
23 dataMissing Network
24 unexpectedDataValue The 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
25 pw-RegistrationFailure Network
26 negativePW-Check Network
27 noRoamingNumberAvailable Network
28 tracingBufferFull Network
2b numberOfPW-AttemptsViolation Network
2c numberChanged Network
2d busySubscriber Network
2e noSubscriberReply Network
2f forwardingFailed Network
30 or-NotAllowed Network
31 ati-NotAllowed Network
32 noGroupCallNumberAvailable Network
33 resourceLimitation Network
34 unauthorizedRequestingNetwork Network
35 unauthorizedLCSClient Network
36 positionMethodFailure Network
3a unknownOrUnreachableLCSClient Network
47 unknownAlphabet Network
48 ussd-Busy Network
56 subscriberLocationReport Network
2100 Unrecognized component Network
2101 Mistyped component Network
2102 Badly structured component Network
2200 Duplicate invoke ID Network
2201 Unrecognized operation Network
2202 Mistyped parameter Network
2203 Resource limitation Congestion in the target network. Network
2204 Initiating release Network
2205 Unrecognized linked ID Network
2206 Linked response unexpected Network
2207 Unexpected linked operation Network
2300 Unrecognized invoke ID Network
2301 Return Result unexpected Network
2302 Mistyped parameter Network
2400 Unrecognized invoke ID Network
2401 Return Error unexpected Network
2402 Unrecognized error Network
2403 Unexpected error Network
2404 Mistyped parameter Network
6000 memoryCapacityExceeded SIM card full Network
6xxx Handset delivery failure 6XXX error codes usually related to a handset or basestation issue but other reasons were observed, too. Network
6001 equipmentProtocolError Network
6002 equipmentNotSM-Equipped Network
6003 unknownServiceCentre Network
6004 sc-Congestion Network
6005 invalidSME-Address Network
6006 subscriberNotSC-Subscriber Network
8000 Unrecognized message type Network
8001 Unrecognized transaction ID Network
8002 Badly formatted transaction portion Network
8003 Incorrect transaction portion Network
8004 Resource limitation Congestion in target network. Network
8008 Node not reachable General error. May, among other reasons, be a congestion in target network, on SS7 layer or unknown MSISDN range. Network
800b Dialogue collision Usually indicates congestions inside the destination network or en route. Network
8010 Node not reachable Routing error, can indicate, e.g., congestions or missing routing data inside the international SS7 network. Network
a001 No network response A network node did not respond in time to sms77.io. Network
a002 Message too long The message exceeds the maximum size. sms77.io
cxxx The 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
c000 See description for error code cxxx See description for error code cxxx Network
c001 sc-AddressNotIncluded SC address not included in message waiting list. Network
c002 mnrf-Set Mobile subscriber not reachable. Network
c003 See description for error code cxxx See description for error code cxxx Network
c004 mcef-Set SIM card full Network
c005 See description for error code cxxx See description for error code cxxx Network
c006 See description for error code cxxx See description for error code cxxx Network
c007 See description for error code cxxx See description for error code cxxx Network
c008 mnrg-Set Mobile station not reachable for GPRS. Network
c009 See description for error code cxxx See description for error code cxxx Network
c00a See description for error code cxxx See description for error code cxxx Network
c00b See description for error code cxxx See description for error code cxxx Network
c00d See description for error code cxxx See description for error code cxxx Network
d000 Internal error Routing information could not be processed. sms77.io
d001 Customer blocked Customer is not allowed to send at all or receiver is currently roaming in a network which is not accessible to customer. sms77.io
d002 Destination blocked The message could not be delivered because the destination operator is currently not available. sms77.io
d004 Destination temporarily not available Operator network physically not reachable for a longer period. Network
d00a Destination blocked and not reroutable Target network currently not available or the destination operator is currently not accessible to customer. Network
d00c Insufficient routing rights The destination operator is not accessible to customer. sms77.io
d010 Destination blocked by customer Destination network blocked by customers choice. sms77.io
d020 providerNotAvailable The destination network did not respond to sms77.io, possibly due to congestion. Network
e010 Missing parameter The destination operator responded to our signals with an empty signal. This can occur when a CDMA receiver is addressed. Network
e040 Timeout A network node en route or inside of the destination operator did not respond or did not respond in time. Network
e082 Signalling error Signalling error in the target network. Network
fc0a No network response A network node did not respond in time to sms77.io. Network
fc06 Subscriber has opted out from this messaging service For 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
fc07 Message rejected by Chat App The destination Chat App rejected the message due to one or more incorrect parameters Network
fc08 Not a Chat App user The recipient is not a user of the respective Chat App Network
ffdd Destination blocked The message could not be delivered because the destination operator is currently not available. sms77.io
ffde Destination blocked The message could not be delivered because the destination operator is currently not available. sms77.io
ffdf Customer blocked Customer is not allowed to send at all or receiver is currently roaming in a network which is not accessible to customer. sms77.io
ffe0 Customer blocked Customer is not allowed to send at all or receiver is currently roaming in a network which is not accessible to customer. sms77.io
ffe1 Internal error Routing information could not be processed. sms77.io
ffe5 Destination blocked by customer Destination network is blocked by customers choice. sms77.io
fff0 Destination blocked The message could not be delivered because the destination operator is currently not available. sms77.io
ffff Internal error code Usually 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
4xxx Network specific error codes 4XXX error codes can indicate that the route was blocked by the destination operator but other reasons were observed, too. Network
81xx Incorrect message length Network
82xx Missing mandatory IE Network
83xx Incorrect IE length Network
84xx Bad parameter value Network
85xx No free dialogues Network
86xx Invalid dialogue ID Network
87xx Exceeded maximum length Network
88xx Invalid parameter Network
8axx Agent not registered Network
89xx Inappropriate transport message Network
8cxx TC User not bound Network
exxx GSM adapter error An error occurred in a GSM adapter with unclear reason. Network
e140 Node not reachable Routing error, can indicate, e.g., congestions or missing routing data inside the international SS7 network. Network
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