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How do I handle credit card authorizations?

If the authorization and charge happen simultaneously, send one $transaction with $transaction_type "$sale" or "$capture".

If you run an authorization and then a capture as two distinct steps, send a $transaction with $transaction_type "$authorize" and then a $transaction event with $transaction_type "$capture." Send all the same fields in both and make sure that the $transaction_id values are the same.

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