These parameters consist of all required event data parameters and any additional data parameters the Conversions API needs to use for ads attribution and/or ads delivery optimization.
The Conversions API now supports web, app, and offline events.
Website events shared using the Conversions API require the
event_source_url parameters, while non-web events require only
action_source. These parameters contribute to improving the quality of events used for ad delivery and may improve campaign performance.
By using the Conversions API, you agree that the
action_source parameter is accurate to the best of your knowledge.
See a list of all standard parameters users can send to Meta.
If you integrate your CRM system with the Conversions API for lead events, refer to the CRM Integration guide for the required fields.