Step 7.1. Inherit from GA4 client

Tag will automatically convert your GA4 events into corresponding Facebook standard events and user parameter. 

1. Add a Facebook Conversion API Tag to your server GTM container by clicking Add to Workspace.

2. Create a new tag and select the tag type Facebook Conversion API Tag. Select Inherit from client and add:

1. FB API Access Token.
2. FB Pixel ID.
3. Test ID. 

3. Add a trigger. Click triggers →  + in the top right corner →  trigger settings and select a custom trigger →  this trigger will fire on Some Events →  Client Name equals GA4. Click Save.