If your SMPP SMS messages were not delivered as expected, you can use the Message Search tool under the SMS tab on the Sinch Customer Dashboard to view a report of messages you have sent using the SMS API. The entries in this report will include any messages that have been processed (or, in some cases, are in process).
Additionally, the Status column in the report will provide you with information on the current state your message is in:
Rejected
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Message was rejected by Sinch. Sinch does not charge for rejected messages.
Troubleshooting Steps: If you receive the Rejected status for any of your SMPP SMS messages, we recommend you take the following Troubleshooting steps:
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No Delivery Receipt
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The operator did not provide a delivery receipt for this message.
Troubleshooting Steps: If you receive the No Delivery Receipt status for any of your SMPP SMS messages, we recommend you take the following Troubleshooting steps:
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Pending Delivery Receipt
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Awaiting delivery receipt for this message from the operator.
Troubleshooting Steps: If you receive the Pending Delivery Receipt status for any of your SMPP SMS messages, we recommend you take the following Troubleshooting steps:
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Failed |
Messages which show a status of Failed will have an associated Error Code. Please refer to the SMPP Error Codes section for details of how to understand and troubleshoot common SMPP Error Codes. |
If any of your SMPP SMS message search results have a Failed status, they will include an error code. These error codes are detailed in our developer documentation, and can be divided into Temporary and Permanent errors. Temporary errors indicate a state that may be resolved without changing the corresponding send message request. In these cases, retrying the same send message request may result in success as circumstances change. Permanent errors indicate a state in which the corresponding request must be updated in order to resolve the issue. For example, including a non-existent MSISDN in a send message request would result in a Permanent error; the MSISDN would need to be updated in order to resolve the issue.
The most common codes are listed below:
Error Code |
Treated as |
Description |
Comment/Action |
Troubleshooting Tips |
61 |
Permanent |
Destination blocked. |
Account not permitted to reach the destination MSISDN |
|
62 |
Permanent |
Keyword blocked. |
A phrase or word in the body of the message has been caught in the anti-spam filter |
|
150 |
Permanent |
Unknown |
The MSISDN is not active with the carrier |
|
151 |
Permanent |
Call barred. |
Message rejected due to active barring by the end-user. |
The person receiving the message needs to call their mobile service provider to fix any blocks on their account. It might be best to stop sending messages to this number for now. |
153 |
Temporary |
Absent subscriber. |
Subscriber handset not connected to the network. Likely turned off or outside the area of coverage. |
|
158 |
Temporary |
Memory capacity exceeded. |
The handset does not have sufficient free memory to accept the SMS |
Message recipient may need to make sure the phone has enough space for new messages. Delete old texts if necessary. |
212 |
Temporary |
Device not short message equipped. |
The number cannot receive text messages, for example Data-SIMs |
Check Number Type: Message Recipient may need to ensure the number can receive texts. It shouldn't be a data-only SIM card, landline, VoIP, or any special service number that can't get text messages. |
255 |
Permanent |
Personal service barring, MT Personal. |
The end-user has opted out from receiving messages. Either all A2P messages or sender ID specific |
|
300 |
Permanent |
Invalid destination address |
The MSISDN does not exist |
|
310 |
Permanent |
Invalid source address |
The source address is not permitted. Refer to Country Information and local regulations |
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Note: Refer to the Sinch SMS SMPP Developer Documentation for a complete list of all the SMPP error codes.
Watch this step-by-step tutorial to familiarize yourself with the basics of SMS and to learn how easy it is to send your first message with Sinch.
Sign up to the Sinch Dashboard and get started today or take a look at the Sinch SMS Product page to learn more about our SMS products.