To update an Airtable record, you'll need to enter the unique ID of the record you want to modify in the Record ID field. This ID is specific to each record in your Airtable base.
If you're not sure how to find the Record ID, you can typically locate it in the Airtable interface or by using the Lookup Record action in Clay first. If you need help finding the Record ID, let me know, and I can provide more guidance on how to retrieve it.