When you send an attachment to your ERP (E-conomic, Nav, Uniconta etc.), we receive a key in return from the ERP showing that the attachment has been delivered. This key can also be used to look for the document if you find it difficult to find it in your ERP.
This ERP coloumn provides a quick overview of whether the attachment is received by your ERP or not.
ERP key and handle displays, the unique numbers we received from your ERP. It is the key you need to use when looking for a document in your ERP.