When you are developing an extension for Dynamics 365 Business Central and you need to interact with the standard Microsoft’s code, one of the hardest problems is detecting which event you can subscribe to (As you already know, you cannot modify standard code in the D365BC platform, but you can only attach to events raised by the platform).

In Business Central there is feature available to see which events are executed during process you ran, and one can record this event using event recorder.

Refer the below steps for detail explanations:

Step 1: Search for Event recorder.

Step 2: Click on Event recorder which will show as below, here you have a Record Events menu with a Start and Stop button. Press Start to start the recording process:

A confirmation dialog appears. Press Yes to start recording events:

Step 3: Go to Another Browser and start executing the required process. In this example I am creating an order

Step 4: When you have finished the process, press the Stop button in the Event Recorder page.

Now go back first browser and click on record Events –> Stop

Once you click ‘Yes’ then it will display all the raised events are logged in the exact order they were called, and you can see the event (name and type) and the object where the event is published:

Go to the last columns i.e. Get AL Snippets where you will get AL code for the events.

Step 5: You can refer the event and use it in your AL extension project in Visual Studio Code.

Note: event is shown in VS code editor just for example purpose not related to above triggered event.