All successful transmissions are logged to the attachments tab of the related transaction:
The text data is in the related EDI format (e.g. EDI850). This serves as a confirmation the data was sent and acnowledged as "received" only by the remote server. Just like a fax or email receipt, the only way to know someone has the order is to contact the factory directory.
(This information is also used to diagnose any issues with the transmission. Please do not delete these attachments.)