Is transaction id unique globally or just against every account?

[Shinegrin]

It is very important for our business system.

[PayPal_Randy]

@Shinegrin,

Thanks for reaching out to the Community!

When a payment is sent via the PayPal system, both the sender and the recipient will receive a unique Transaction ID. You can locate the the specific payment in the Recent Activity section of your PayPal account's Summary page.

- Randy 

[Shinegrin]

@PayPal_Randy 

Thanks for your replying, but which didnt give me a clear answer.

I just want to know is it possibale that two transaction made by different account has a same transaction id ?

That's to say, is transaction_id or (paypay_account, transaction_id) unique globally ?

[PayPal_Olivia]

Hi @Shinegrin,

Thank you for your reply. The transaction ID is completely unique. The same transaction would have a different ID if viewed by the buyer than it would be if viewed by the seller, and no two transactions share the same transaction ID, globally.

I hope this helps!

Olivia