What is a Peppol SMP?
A SMP (Service Metadata Publisher) is a directory in which the recipient's metadata, which documents he can receive, and which Access Points he uses are stored.
When do you need a SMP?
For companies that only send, an Access Point is sufficient. An SMP is necessary for any organisation that receives documents.
SMP – exchange of documents via the Peppol network
For the exchange of documents via Peppol, both an Access Point and an SMP service are needed. The SMP ensures that the organisation can be found in the network and is required for receiving documents. When sending documents via the network, the SMP service is necessary for receiving status messages, as the recipient must send back a document with the status information, and for that, the sender must be traceable.