<Note icon="fa-regular fa-circle-info"> **Note – Refund data retained for 13 months**

The API retains all transaction objects for 13 months from CreationDate. This applies to refunds and the initial transaction linked to a refund.

A call to retrieve the initial transaction of a refund, based on the refund's InitialTransactionId, may return a 404 Not Found if it occurred more than 13 months ago.

For more information, see the <a href="/api-reference/overview/data-availability-periods">Data availability periods</a> article. </Note>