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E_MBN_SMS_OPERATION_NOT_ALLOWED
E_MBN_SMS_OPERATION_NOT_ALLOWED is a Windows Mobile Broadband (MBN) HRESULT. It indicates that the SIM or device policy does not permit the requested SMS operation.
What to check for E_MBN_SMS_OPERATION_NOT_ALLOWED
- Check SIM policy, carrier restrictions, and whether the operation is allowed for the active subscription.
- Do not retry the identical operation until the authorization or service restriction has changed.
- Use the carrier or managed-device workflow when permissions must be changed outside the application.
Microsoft: IMbnSmsEvents::OnSmsSendComplete
Diagnostic discriminator: Check SIM/device SMS policy for the exact requested action. The modem can support SMS generally while policy forbids this particular send, delete or management operation.
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