Where I can find the list of transaction codes and their usage, I heard that there is some table which contains all the transaction codes with their descriptions. Does anyone know about the Table that consist all the T-Code? Listed here are the various ways you can find the list of transaction codes and their usage: Use transaction SE11 - ABAP Dictionary: Fill in the Database table name and click the Display button. - TSTC table will contain all the Tcodes and - TSTCT table will contain all the Tcodes with Texts. Once you entered the screen, click in Top Menu - Utilities - Table contents - Display If you want to display all the transaction code (total - 57,048) you have to change the Fields: Maximum number of hits to 99999 (default 500). or Simply goto transaction SM01, although this tcode is to Lock/Unlock any transaction code, you can also view all the tcode available in the R/3 system from here. or Goto transaction SE93 There are two ways where you can find the list of transaction codes in SE93. Method 1: You must be familiar with the starting characters strings for each of the R/3 application modules. Assuming you know that most Materials Management transaction codes start with MM. In the Fields: Transaction code, type in MM* and press the function key F4 The list of transaction code starting with MM will be displayed. Method 2: On the Top Menu, click Utilities - Find - Execute and the first 500 transaction will be display. If want to display all the tcodes, make sure you remembered to change the Fields: Maximum no. of hits right at the bottom of the screen. I know a particular T Code and can enter and work on it. How do I know what is the menu path for that T Code? Enter Search_SAP_Menu in the command box and when the pop box appears enter, the Tcode and it will give the nodes and menu path. This is helpful only in case of SAP Menu not in case of SPRO - ie IMG.....