Verification of Custom Events in the Meta Events Manager

Verifying your custom events in the Meta Event Manager is a necessary step – if you skip it, you will not be able to use these events in ads, custom conversions or custom audiences.

Source: Facebook Ads Panel

To check if you need to verify custom events, go to the Events Manager in Meta Business Manager. Then select the ‘Data Source’ section and select a specific Pixel. You will find a blue ‘Verify’ button in the events marked with a warning.