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E_MBN_SMS_INVALID_MEMORY_INDEX
E_MBN_SMS_INVALID_MEMORY_INDEX is a Windows Mobile Broadband (MBN) HRESULT. It indicates that the SMS operation refers to a message-memory index that is not valid for the selected device or store.
What to check
- Enumerate or refresh the SMS store before reading, deleting, or updating a message by index.
- Treat indices as device-local and volatile; do not reuse an index after SIM change, reset, or store cleanup.
- Check for an off-by-one conversion between application identifiers and the modem storage index.
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