Test Meta Pixel before it hits real data
Turn on test mode, paste a Test Code, and fire events without writing a live ad account.

A live Pixel writes to a live ad account. Test Mode lets you fire the same events without that.
Open Marketing and sales → Instagram & Facebook → Facebook Pixel.
Use Facebook Pixel can be No, Standard, Pixel API, or Both. Fill the IDs that match the mode you picked.
Switch Enable Facebook Pixel Test Mode on. Paste the Test Code. Save.
Questions about Facebook Pixel
Marketing and sales → Instagram & Facebook → Facebook Pixel.
Enable Facebook Pixel Test Mode plus a Test Code. Events stay off the live ad account until you turn that off.
No, Standard, Pixel API, or Both. The IDs you fill follow that choice.
Test the Pixel before you go live
The switch is already in admin, under Instagram & Facebook.