The family of /changes endpoints has a new member: Proforma invoice changes. As all the other /changes endpoints, it shows the last add/edit or delete event to a proforma invoice (always the last action only). History is guaranteed for 30 days. The endpoint (as all the others) does not contain all proforma invoices, it is intended to keep track of changes after all proforma invoices are read using List of proforma invoices and Proforma invoice detail.