Make sure you familiarize yourself with the following important concepts of our API:
Prices and Quantities, Products and Articles, Sync Markers
After taking the time to understand these concepts, you will much better understand the basics of our API.


With the Mplus API, it is possible to send little notification message to the cash register’s screen, when it is in use. Notifications are real-time, so if the cash register is not running, the message will not be shown.

Sending a notification message

In the cash register, the message will be shown in the upper right corner, like this: