Handler's work on the object

Processed and unprocessed data

After the handler is started, all data starts to be divided into two streams: processed and unprocessed. To view them, click on the gear in the upper right corner of the object interface and select the necessary option in the switch.

Handler error navigation

If an error occurs during the execution of the handler, you will immediately you will immediately see it in the object's interface. It is displayed in the form of text with an icon red light bulb.
All errors are saved in history, just like data.
Click on the error to open the handler on the line that caused it.