SAP R/3 форум ABAP консультантов

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ABAP Programming / Naming Standards
By Supriya Joshi

Following are the performance standards need to be following in writing ABAP programs:
For all ABAP Programs / Transaction Codes


Add the below header at the beginning of Every ABAP program

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Naming notation

ABAP has a large number of naming conventions for different language elements. These are conventions and not rules, so an ABAP programmer is free to abide by them or not. However ABAP code developed by SAP itself generally respects these naming rules. Below is a list.

ALV_ - Advance list viewer
AS_ - Methods that perform type conversions
CHECK_ - Check Methods
CH_ - Changing Parameters
CL_ - Class name
CO_/C_* - Constants
DR_ - Data reference
G_ - Global variables/data objects
GT_ - Global table
GX_ - Global boolean field (X or space)
IF_ - Interface
INT_/IT_ - Internal Table
IS_ - Methods that return a Boolean value
L_ - Indicates the data object is local. Often, before underscore, put a 'type letter' in case of simple type (LC_,LF etc.)
LC_ - Local Constant
LR_ - Local Range
LT_ - Local Table
LVC_ - List Viewer Control
ON_ - Event handler
PA_ - Parameters
PE_/EX_ -Export parameter
PI_/IM_ -Input parameter
RA_ - Ranges/Type Range Of
RE_ - Result
RF_ - Reference Variable
SET_ - Accessors Methods
SO_ - Select-Options
ST_ - Structure
TA_ - Internal Standard Table
TC_ - Table Control
TH_ - Internal Hashed Table
TP_ - Other Variables
TS_ - Internal Sorted Table
TT_ - Table type
TY_ - Types
T_ - Variable is a table (T_MY_TABLE_VARIABLE)
X - Source/first data object (e.g. XVBAK)
Y - Destination/second data object (e.g. YVBAK)
WA_ - Working Area
* -Secondary working area (e.g. *VBAK in TABLES statement. Obsolete)