This document provides a comprehensive list of frequently used SAP transaction codes (T-Codes) for SAP ECC 6. It covers various modules including Finance (FI), Sales and Distribution (SD), Asset Accounting (AA), and Controlling (CO). The list includes descriptions for T-Codes related to document posting, vendor and customer management, reporting, asset transactions, and cost/profit centre accounting. This resource is invaluable for SAP users, consultants, and finance professionals seeking to streamline their work by quickly accessing common transaction codes.