End user transaction code or simply T-code is a functionality provided by SAP that calls a new screen to carry out day-to-day operational activities. A transaction code is a four-character command entered in SAP by the end user to perform routine tasks. It can also be a combination of characters and numbers, for example, FS01. Each module has a different T-code that is uniquely named. For instance, the FICO module's T-code is FI01, while the Project Systems module's T-code will be CJ20.

The T-code, as we will call it throughout the chapters, is a technical name that is entered in the command field to initiate a new GUI window. In this chapter, we will cover all the important T-codes that end users or administrators use on a daily basis. Further, you will also learn more about the standard reports that SAP has delivered to ease daily activities.