> For the complete documentation index, see [llms.txt](https://developer.magtek.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.magtek.com/hardware/card-readers/mms-dyna-devices/dynaprox/documents/programmers-manuals/programmers-manual-commands/notifications.md).

# Notifications

This section provides definitions and practical information about Notification Messages, which follow the format described in section 3.2.2.3.  To find documentation about a specific notification:

* Use the Notification Source byte in the message to find the Notification Source subsection below.  For example, Notification Source 0x01 Transaction leads to subsection 7.1 Notification Source 0x01nn - Notifications from Transactions.
* Within that subsection, use the Notification Source byte plus the Notification Type byte in the message to find the Notification subsection.  For example, Notification Source 0x01 Transaction plus Notification Type 0x01 Information Update leads to Notification 0x0101 - Transaction Information Update.
* Within that subsection, use the four bytes of Notification Detail Code in the message to look up the notification in the Notification Detail Code table.  For example, 0x07080302 leads to a row in Table 7.1‑1 that provides practical information about what event led to the notification, and how to interpret the Notification Payload.

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