What is SAP transaction code?

SAP Transaction code is a short cut key attached to a screen. Instead of using SAP easy access menu we can also navigate to a particular screen in SAP by entering the transaction code (T-code for short) in the command field of the standard toolbar.

Some of the useful transaction codes for ABAP developers.

T coDe	description
SE11	ABAP Data Dictionary
SE16	Data Browser
SE37	Function Builder
SE38	ABAP Editor
SE41	Menu Painter
SE51	Screen Painter
SE71	SAP Script Layout
SE80	ABAP Workbench
SE91	Message Maintenance
SE93	Maintain Transaction