PayPal Pro works with API requests and responses, so it does not work with Payment Data Transfer. You should receive the transaction id in the API response.
If you did not receive the information in the response, you can use Transaction Search to locate Transaction IDs. Below is the information on Transaction Search API:
Transaction Search API
If needed, however, you can also setup Instant Payment Notifications, which will send your database the transaction id as well.
Information on Instant Payment Notifications
Thank you,
Jennifer
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