After you set up server events using the Conversions API, you can use test event code to test events sent from your server through the Conversions API. Here's how you can find test event code.

Step 1 :Go to Facebook Events Manager, make sure you have logged in and chose your business account.

Step 2 : Select the pixel ID you want to test event and choose Test Events.

Step 3 : Copy the test event code and paste into the app: