ABAP Transaction Codes

USMM	Pressing F8 will display all hotpacks applied.
SEARCH_SAP_MENU	Show the menu path to use to execute a given tcode. You can search by transaction code or menu text.
DI02	ABAP/4 Repository Information System: Tables.
LSMW	Legacy System Migration Workbench. An addon available from SAP that can make data converstion a lot easier. Thanks to Serge Desland for this one.
OSS1	SAP Online Service System
OY19	Compare Tables
SM13	Update monitor. Will show update tasks status. Very useful to determine why an update failed.
S001	ABAP Development Workbench
S001	ABAP/4 Development Weorkbench.
S002	System Administration.
SA38	Execute a program.
SCAT	Computer Aided Test Tool
SCU0	Compare Tables
SE01	Old Transport & Corrections screen
SE03	Groups together most of the tools that you need for doing transports. In total, more than 20 tools can be reached from this one transaction.
SE09	Workbench Organizer
SE10	New Transport & Correction screen
SE11	ABAP/4 Dictionary Maintenance SE12 ABAP/4 Dictionary Display SE13 Maintain Technical Settings (Tables)
SE12	Dictionary: Initial Screen – enter object name.
SE13	Access tables in ABAP/4 Dictionary.
SE14	Utilities for Dictionary Tables
SE15	ABAP/4 Repository Information System
SE16	Data Browser: Initial Screen.
SE16N	Table Browser (the N stands for New, it replaces SE16). Provided by Smijo Mathew.
SE17	General Table Display
SE24	Class Builder
SE30	ABAP/4 Runtime Analysis
SE32	ABAP/4 Text Element Maintenance
SE35	ABAP/4 Dialog Modules
SE36	ABAP/4: Logical Databases
SE37	ABAP/4 Function Modules
SE38	ABAP Editor
SE39	Splitscreen Editor: Program Compare
SE41	Menu Painter
SE43	Maintain Area Menu
SE48	Show program call hierarchy. Very useful to see the overall structure of a program. Thanks to Isabelle Arickx for this tcode.
SE49	Table manipulation. Show what tables are behind a transaction code. Thanks to Isabelle Arickx for this tcode.
SE51	Screen Painter: Initial Screen.
SE54	Generate View Maintenance Module
SE61	R/3 Documentation
SE62	Industry utilities
SE63	Translation
SE64	Terminology
SE65	R/3 document. short text statistics SE66 R/3 Documentation Statistics (Test!)
SE68	Translation Administration
SE71	SAPscript layout set
SE71	SAPScript Layouts Create/Change
SE72	SAPscript styles
SE73	SAPscript font maintenance (revised)
SE74	SAPscript format conversion
SE75	SAPscript Settings
SE76	SAPscript Translation Layout Sets
SE77	SAPscript Translation Styles
SE80	ABAP/4 Development Workbench
SE81	SAP Application Hierarchy
SE82	Customer Application Hierarchy
SE83	Reuse Library. Provided by Smiho Mathew.
SE84	ABAP/4 Repository Information System
SE85	ABAP/4 Dictionary Information System
SE86	ABAP/4 Repository Information System
SE87	Data Modeler Information System
SE88	Development Coordination Info System
SE91	Maintain Messages
SE92	Maintain system log messages
SE93	Maintain Transaction.
SEARCH_SAP_MENU	From the SAP Easy Access screen, type it in the command field and you will be able to search the standard SAP menu for transaction codes / keywords. It will return the nodes to follow for you.
SEU	Object Browser
SHD0	Transaction variant maintenance
SM04	Overview of Users (cancel/delete sessions)
SM12	Lock table entries (unlock locked tables)
SM21	View the system log, very useful when you get a short dump. Provides much more info than short dump
SM30	Maintain Table Views.
SM31	Table Maintenance
SM32	Table maintenance
SM35	View Batch Input Sessions
SM37	View background jobs
SM50	Process Overview.
SM51	Delete jobs from system (BDC)
SM62	Display/Maintain events in SAP, also use function BP_EVENT_RAISE
SMEN	Display the menu path to get to a transaction
SMOD/CMOD	Transactions for processing/editing/activating new customer enhancements.
SNRO	Object browser for number range maintenance.
SPRO	Start SAP IMG (Implementation Guide).
SQ00	ABAP/4 Query: Start Queries
SQ01	ABAP/4 Query: Maintain Queries
SQ02	ABAP/4 Query: Maintain Funct. Areas
SQ03	ABAP/4 Query: Maintain User Groups
SQ07	ABAP/4 Query: Language Comparison
ST05	Trace SQL Database Requests.
ST22	ABAP Dump analysis
SU53	Display Authorization Values for User.
WEDI	EDI Menu. IDOC and EDI base.
WE02	Display an IDOC
WE07	IDOC Statistics

T-Code for Aftermarket Sales & Services Reports

Aftermarket Sales & Services Reports
Business Area	Transaction Code	Description
Aftersales & Services
	IW53	Display Service Notification
	IW33	Display Service Order
	KE24	Line item display - actuals

T-code Aftermarket Sales & Services

Aftermarket Sales & Services
Business Area	Transaction Code	Description
Basic Data
	IE08	Create Equipment
	IE02	Change Equipment
Notifications
	IW54	Create Service Notification
	IW58	Change Service Notifications
Service Orders
	IW31	Create Service Order
	IW32	Change Service Order
	IW42	Confirm Service Order
	KO88	Order Settlement
Service Billing
	DP90	Create Billing Request
	VF44	Revenue Recognition

T-Code for Engineer to Order Reports

Engineer to Order Reports
Business Area	Transaction Code	Description
Reporting
	CJ93	Display Standard WBS
	CN03	Display Standard Network
	CN09	Display Network Parameters
	CU43	Display Configuration Profile
	S_ALR_87013531	Analyzing costs / revenues
	S_ALR_87013532	Project Plan/Actual/Variance Report
	S_ALR_87013542	Project Cost Element Reporting
	S_ALR_87013543	Project Cost Reporting
	CN71	Project Info System
	CV03N	Display Business Document
	CNMM	Project Oriented Procurement

T-code for Engineer to Order

Engineer to Order
Business Area	Sub node	Transaction Code	Description
Engineer To Order
	Basic Data
		CJ91	Create Standard WBS
		CJ92	Change Standard WBS
		CN01	Create Standard Network
		CN02	Change Standard Network
		CN98	Delete Standard Network
		CN08	Edit Network Parameters
		CU41	Create Configuration Profile
		CU42	Change Configuration Profile
		CS71	Create Project BOM
		CS72	Change Project BOM
		CN33	BOM Transfer
	Project Planning
		CJ20N	Project Planning
		MD51	Project MRP Multi Level
		CN72	Project Versions
		CNMM	Project Orientated Reporting
	Project Settlement
		CJ88	Project Settlement
	Records Management
		SCASE	Case Management
		CV01N	Create Business Document
		CV02N	Change Business Document
	Time Entry
		CAT2	Time Entry on Corresponding Project Elements
		CAPS	Approval of Confirmation Data
		CAT7	Cost Transfer and Cost Controlling