Wire transfers are transfers going through Swift. They allow you to send funds outside the SEPA network and to transfer money in foreign currencies.
Initiating a wire transfer may require you to upload a supporting document. In such case the transfer will have a pending_attachment_required status and you'll receive an event wire_transfer_attachment_required on your webhook.
If no document is required but you still want to attach one to your transaction, use the attachments endpoints.
