Is original_transaction_id and transaction_id globally unique?

Hello, Apple App Store Server API Team!

I have one questions about the identifiers provided by Apple App Store Server API. Could you please answer?

We are running an iOS App. In our app, the transactionId we get from Apple App Store Server API is called T1. (Example)

Q1. Is it correct that other iOS apps cannot get T1 for transactionId from Apple App Store Server API? (I'm wondering if the transactionId is globally unique across apps.)

Thank you!

Is original_transaction_id and transaction_id globally unique?
 
 
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