We will be deploying changes to UNICREDIT_BACXROBU.

As a result of this, the "internalTransactionId" for all currently connected account transactions will change to a new one.

If you are storing transaction data on your end it might cause duplicates, as since all the transactions will now be returned with a new internalTransactionId.

To avoid this you could delete the /transaction data that you have currently stored, and request full transaction history for the connected accounts, to get fresh data with the updated “InternalTransactionId” .
Alternatively, you can opt not to re-import the transactions from before the change.