Many departments provide specialized support services to other departments. For example, the University's Print Shop provides services for on-campus printing. Generally, the department that provides the service pays for the initial expenditures associated with the service. After the service has been provided, its cost is charged back to the department that has received the service. Charge backs are posted to departmental operating budgets by the Budget Office and are backdated to be posted into the appropriate month. For example, March charges would be posted in April, but would show in SAP/BI with a posting date of March 31.