Data Delivery (Single)
The following call flow explains the procedure followed for delivering MQTT MT messages to a single device.
Figure 2-27 Data Delivery (Single) Call Flow

Table 2-16 Data Delivery (Single) Response Code
| Response Code | Reason |
|---|---|
| 200 | Device is in connected state and data is delivered |
| 201 | Buffering |
| 400 |
|
| 404 | Device not subscribed to topic |
| 429 |
Too Many Requests for device APN rate control limit is reached |
| 500 | Processing error |