The Comarch EDI platform was introduced at BP in 2006, with additional modules for processing documents from their system. After thorough tests with a selected partner, the electronic data interchange system (EDI) was launched in 2008, using standard Comarch EDI platform modules. To ensure effective collaboration between BP and its business partners, and to maintain control over the SLA established for trade processes, the next stage of the project involved development of the Comarch Tracking module. Conformity with the model plan of orders is verified using the order placement schedule for each station. Additionally, the application provides a full preview of document transmissions, which allows users to check precisely when orders are delivered to business partners. In 2009, the project was expanded by adding new document types: ASN (advanced shipping notice), CASN (confirmed ASN) and DISRE (discrepancy report). By 2014, the average monthly number of documents transmitted by means of EDI had reached approximately 60 000. In the near future, it is planned to launch electronic invoicing with support for electronic archiving, as well as electronic inventory reports (stock monitoring).