Symptom
When sending outbound SMS, I received delivery receipt error code 99.
Applies To
- Outbound SMS
- Delivery Receipts (DLRs)
- Error Code 99
Resolution
Submit a support request for further assistance.
Cause
Error code 99 is a general error that occurs when your request is processed. The precise cause of this error can vary due to multiple factors.
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- DLR Error Code 99 General Error
- DLR Error Code 9 Illegal Number
- DLR Error Code 3 Absent Subscriber Permanent