Meta Business Help Centre
About the offline conversions API

You can send your offline events data directly to Meta using the Offline Conversions API. However, the Conversions API now supports offline events so it's recommended that you set up the Conversions API instead of the Offline Conversions API. If you've already set up the Offline Conversions API, you can continue to use it unless you want to create datasets that connect website or app event data with your offline event data. Learn more about the Conversions API.
If you're unable to set up a direct integration through the Conversions API, you might be able to use one of these options to send offline events instead:
- Use a partner integration. Note: Not all partner integrations support sending offline events using the Conversions API at this time.