This call for tenders concerns the provision to the UPU of support and corrective, adaptive and extended maintenance services for the following business applications used at its International Bureau, for a period of four years: – Pegasus • Document production system (K2) • Portal to host working documents (SharePoint) – Compendia • Letter Post Compendium • Parcel Post Compendium • Postal Payment Services Compendium • Customs Compendium – Standard Code List Management System (SCMS) • Public website for published code lists • Dedicated code list management website for UPU International Bureau staff and editors in member countries