Simple ABAP/4 for trouble shooting
May 25th, 2004
Objectives:
•Understand and get an idea on what ABAP/4
programming does, and what is the component in
ABAP workbench
•Get to know common statement, understand the
ABAP program logic roughly.
•Able to do the basic investigation when facing the
problem.
Content
•Introduction R/3 Basis system overview
•ABAP/4 overview
Component, Program, ABAP dictionary, Function Module ,
Message/Transaction code, etc.
•Common Statement / Command
- Main event in ABAP program
- General ABAP command
•Transportation for ABAP objects
•Type of problem and how to investigate
Program bug, ABAP runtime error, Update terminate, Unexpected
error message.
Introduction R/3 Basis system overview
R/3 user
R/3 user
R/3 user
Presentation component
ABAP
Workbench
R/3 Basis
system
R/3
R/3
Application 1 ... Application N
Kernel & Basis services
Database Management System
Database
Content
•Introduction R/3 Basis system overview
•ABAP/4 overview
Component, Program, ABAP dictionary, Function Module ,
Message/Transaction code, etc.
•Common Statement / Command
- Main event in ABAP program
- General ABAP command
•Transportation for ABAP objects
•Type of problem and how to investigate
Program bug, ABAP runtime error, Update terminate, Unexpected
error message.
ABAP/4 overview
Topics:
•Often used transactions
•What is ABAP/4 program?
•ABAP dictionary
•Function Module
•Message
•Transaction code
•Authorization in ABAP object
Often used transactions
• SE80 - Repository Browser: Used to display and edit hierarchical lists of
development objects.
• SE11 - Dictionary : Used to define and save data definitions You can also store
documentation, help information, data relationships, and other information. You also
use the Dictionary to generate database objects like tables and indexes.
The Dictionary is a central storage area for system-wide data definitions. Because
definitions are stored centrally, they are available for use anywhere in any program
throughout the system
• SE38 - ABAP editor : Create/edit/Display program code
• SE37 - Function Builder : define and store function modules, use the library to
write new modules and look up information on existing modules
Often used transactions (con’t)
• SE51 - Screen Painter : Used to design the screens in an application's
graphical user interface.
• SE41 - Menu Painter : Used to design the menus that appear in your
interface
• SE16 - Data browser : Display data in Transparent table or Database view
• SM30
- Table maintenance : Maintain data
ABAP/4 overview
Topics:
•Often used transactions
•What is ABAP/4 program?
•ABAP dictionary
•Function Module
•Message
•Transaction code
•Authorization in ABAP object
What is ABAP/4 program?
ABAP/4 : Advance Business Application Programming
Type of ABAP/4 program
1
Executable program(Report/Interface)
Can be started with transaction code/directly/background
(via SE38 or SA38 - For example: RMCB0100 )
I
INCLUDE program
Can not run on its own, has been included in other program
M
Module pool
Processing step of screens, can be executed via transaction code or
Menu function (For example: SAPMV45A - Sale order processing)
F
Function group
Contain function modules (SE37)
S
Subroutine pool
Externally-called subroutines
ABAP/4 overview
Topics:
•Often used transactions
•What is ABAP/4 program?
•ABAP dictionary
•Function Module
•Message
•Transaction code
•Authorization in ABAP object
ABAP Dictionary
SE11 - Data dictionary
View
Table
Structure
Data element
ABAP Dictionary
Domain
F4
Search help
Lock object
ABAP/4 overview
Topics:
•Often used transactions
•What is ABAP/4 program?
•ABAP dictionary
•Function Module
•Message
•Transaction code
•Authorization in ABAP object
Function module
Function Module
- ABAP/4 program: Include program
- Special external subroutines (include) stored in a central library
- Different from normal ABAP routine is the clearly defined interface
for passing data to and from the function module. The calling program
and the called function module have separate work areas
- Located in Function group (main program start with SAPLxxxx)
- Can be tested separately in SE37
- Statement in ABAP to call function module are:
- CALL FUNCTION ‘xxxxx’
ABAP/4 overview
Topics:
•Often used transactions
•What is ABAP/4 program?
•ABAP dictionary
•Function Module
•Message
•Transaction code
•Authorization in ABAP object
Message
There are several different types of message:
W - Warning (Correction possible)
E - Error (Correction required)
S - Success (message on next screen)
I - Information (press Enter to continue)
A - Abend (Transaction terminated)
X - Exit (Terminated with short dump)
Note :
Transaction code for message maintenance is SE91,
Table store the message text is T100, language dependent.
ABAP key word - MESSAGE
ABAP/4 overview
Topics:
•Often used transactions
•What is ABAP/4 program?
•ABAP dictionary
•Function Module
•Message
•Transaction code
•Authorization in ABAP object
Transaction code
Transaction code is:
Sequence of alphanumeric characters forming a code for
business task.
Transaction type:
Dialog transaction - Flow by sequence of screens (for example FB03)
Report transaction - Start program with type 1 (for example MCBA)
Variant transaction - (client specific) start another transaction with variant
(for example UPAR)
Area menu - Menu which contain the group of frequently-used transactions
(for example S001)
Parameter transaction - pre-assign values in the initial screen and
suppress the screen when transaction is executed (for example OB22)
Note :
All transactions are stored in table TSTC, Maintain via SE93
ABAP/4 overview
Topics:
•Often used transactions
•What is ABAP/4 program?
•ABAP dictionary
•Function Module
•Message
•Transaction code
•Authorization in ABAP object
Authorization in ABAP object
• Program authorization
• Transaction code
• Table maintenance/Data browser
Program authorization group
Authorization group is field of the authorization objects
S_DEVELOP (program development and program execution) and
S_PROGRAM (program maintenance).
This field contains the name of a program group that allows users
to
 execute programs
 schedule jobs for background processing
 maintain programs
 maintain variants
When creating a program, you can specify an authorization group
as one of the program attributes. This allows you to group together
programs for the purposes of authorization checking.
Transaction authorization group
Authorization object in transaction code will be checked whenever
the transaction is started. The following object will be checked
S_TCODE(Authorization check for transaction start )
The authorization checks defined by the developer with transaction
SE93 (transaction maintenance) or in the ABAP/4 source code
continue to be performed.
Field to be checked is TCD: Transaction code
Table maintenance/Data browser
Authorizations for displaying or maintaining tables. The object only
controls access using the standard table maintenance tool (SM31),
enhanced table maintenance (SM30) or the Data Browser (SE16),
including access in Customizing.
Object S_TABU_DIS -Table Maintenance (via standard tools such
as SM31) will be checked for the following fields:
Authorization group for DD objects: Authorization for tables by
authorization class according to table TDDAT. (Using SM31 to
display the authorization group table)
Activity: Allowed operations.
Possible values are:
- 02: Create, change or delete (Maintain) table entries
- 03: Display table entries only
Content
•Introduction R/3 Basis system overview
•ABAP/4 overview
Component, Program, ABAP dictionary, Function Module ,
Message/Transaction code, etc.
•Common Statement / Command
- Main event in ABAP program
- General ABAP command
•Transportation for ABAP objects
•Type of problem and how to investigate
Program bug, ABAP runtime error, Update terminate, Unexpected
error message.
Common Statement / Command
Topics:
•Event in ABAP/4 program
- Dialog module
- Executable program (Selection screen,
lists)
•ABAP statement and Keyword
Event in ABAP/4 program
Event in Dialog Module
100
Transaction code
has been
requested from
R/3 user
200
300
Dialog screen chain
PBO = Process Before Output
PAI = Process After Input
PBO Module.
Module xxxx
Module yyyy
PAI Module
Module aaaa
PBO
Module.
Module
bbbb
Module xxxx
Module yyyy
PAI Module
ModulePBO
aaaaModule.
Module Module
bbbb xxxx
Module yyyy
PAI Module
Module aaaa
Module bbbb
Module pool
Question??
Common Statement / Command
Topics:
•Event in ABAP/4 program
- Dialog module
- Executable program (Selection screen,
lists)
•ABAP statement and Keyword
ABAP statement and Keyword
Statement
The ABAP programming language consists of the following
element types: STATEMENT, KEYWORD, COMMENT.
An ABAP program consists of individual ABAP statements.
Each statement begins with a keyword and ends with a
period. There might be comment in the same line as a
statement
For example:
PROGRAM ZTEST.
WRITE ‘Hello world’.
In this case program ZTEST will generate the list consist of
line ‘Hello world’.
ABAP statement and Keyword(con’t)
Keywords
Declarative keywords :
define data types or declare the data objects
Modularization keywords : define processing blocks in an ABAP program
•
Event keyword :The respective processing blocks are processed as
soon as a particular event occurs
•
Define keyword: define processing blocks that are processed as
soon as they are called by an explicit statement in an ABAP program or in a
screen flow logic
Control keywords: control the flow of an ABAP program according to certain
conditions
Calling keywords: call processing blocks (defined by modularization
keywords) in the same or other ABAP programs or branch completely to other
ABAP programs
Expression and Operation keywords: Process the data
ABAP statement and Keyword(con’t)
Declarative keywords
TYPES create user-defined elementary data types and structured data types
Example TYPES: surname(20) TYPE C.
DATA define local/global variable for structure/internal table/memory block
address OCCURS 0
Example DATA: BEGIN OF address,
address_number(10) TYPE C,
street(30),
Internal
structure
table
country LIKE T001-LAND1,
END OF address.
TABLES create a data object called a table work area refer to ABAP
dictionary(tables, structure,view)
Example TABLES: KNA1, KNB1.
CONSTANTS declare it as a fixed value variable
Example CONSTANTS: name(10) VALUE ‘Exxon Mobil’
ABAP statement and Keyword(con’t)
Modularization keywords
Event define keywords
INITIALIZATION
Before selection screen is displayed
AT SELECTION-SCREEN
After input selection screen + selection screen is active
START-OF-SELECTION
After process selection screen
GET <table>
when logical DB offer a line of database table
END-OF-SELECTION
After all selection has been done
TOP-OF-PAGE
Process when new page is started
END-OF-PAGE
Process when page is ended
AT LINE-SELECTION
When user select line in the list
AT USER-COMMAND
When user press function key/enter command in
command field
ABAP statement and Keyword(con’t)
Modularization keywords (con’t)
Process define key word for statement block
FORM...ENDFORM
Define subroutine
FUNCTION...ENDFUNCTION
Define Function module
MODULE...ENDMODULE
After process selection screen
ABAP statement and Keyword(con’t)
Built in function
Arithmetic & string function
ABS
SIGN
Amount (absolute value) x von x
Sign of x;
SIGN( x ) = 1 if
x>0
SIGN( x ) = 0 if
x=0
SIGN( x ) = -1 if
x<0
CEIL
FLOOR
TRUNC
FRAC
STRLEN
Smallest integer value that is not less than x
Largest integer value that is not greater than x
Interger part of x
Decimal part of x
String length
ABAP statement and Keyword(con’t)
1. SELECT statements
2. SAP tables vs. Internal Tables
3. LOOP-ENDLOOP
4. WRITE statements
5. Comment in ABAP
6. Expressions and Operations in ABAP
7. Subroutines: FORMS, FUNCTION MODULE
ABAP statement and Keyword(con’t)
SELECT statement
• to read table entries (records) from a table (database)
• the return code is stored in system field SY-SUBRC
- 0: if one or more table entries were retrieved
- 4: if no table entries were retrieved (table is
empty/ no data match the criteria)
ABAP statement and Keyword(con’t)
SELECT statement
 For selecting 1 or more records from a table:
SELECT * FROM <dbtab>
Additions
. . . WHERE <condition>
. . . ORDER BY PRIMARY KEY
. . . ORDER BY <f1> <f2> . . . <fn>
ABAP statement and Keyword(con’t)
SELECT statement
 For selecting individual columns from a table:
SELECT <f1> . . . <fn> INTO (<h1> . . . <hn>)
FROM <dbtab> . . .
 For selecting a single record from a table:
SELECT SINGLE * FROM <dtab>
WHERE <condition>.
( full key )
ABAP statement and Keyword(con’t)
SELECT statement
 For excluding duplicates:
SELECT DISTINCT <f1> <f2> . . . <fn>
INTO (<g1> <g2> . . . <gn>)
FROM <dbtab> . . .
 Aggregate expressions:
SELECT
AVG( <f1> )
COUNT( DISTINCT <f1> )
COUNT( * )
MAX( <f1> )
MIN( <f1> )
SUM( <f1>
FROM <dbtab> . . .
INTO (<g1> . . . <gn>)
ABAP statement and Keyword(con’t)
SAP Table
• Two dimensional matrix describing
relationship in database system
• Components:
•
•
•
•
Table fields
Foreign keys
Technical Settings
Indexes
ABAP statement and Keyword(con’t)
Internal Table
• One way to process large quantities of data in ABAP
• Internal table is a dynamic sequential dataset in which
all records have the same structure and a key
• The data is taken from a fixed structure, stored line by
line in the memory
ABAP statement and Keyword(con’t)
Internal Table Declaration <No header line>
TYPES:
BEGIN OF T_T001K,
BWKEY LIKE T001K-BWKEY,
BUKRS LIKE T001K-BUKRS,
END OF T_T001K.
DATA:
IT_T001K TYPE T_T001K OCCURS 0.
ABAP statement and Keyword(con’t)
Internal Table Declaration <With header line>
DATA:
BEGIN OF IT_T001K OCCURS 0,
BWKEY LIKE T001K-BWKEY,
BUKRS LIKE T001K-BUKRS,
END OF IT_T001K.
• WITH HEADER LINE
ABAP statement and Keyword(con’t)
SAP --> Internal table
Allows us to get contents of table and put it into internal
table
SELECT <field1> <field2>.. <fieldn>
FROM <table>
INTO TABLE <internal table>
WHERE <condition>
ABAP statement and Keyword(con’t)
LOOP Command
• To perform looping operation in the flow logic
• Four kinds of loops in ABAP:
• Unconditional loops using the DO statement
• Conditional loops using the WHILE statement
• Loops through internal tables and extract datasets
using the LOOP statement
• Loops through datasets from database tables using
SELECT statement
ABAP statement and Keyword(con’t)
DO Command
DO
<n>
TIMES.
statements
ENDDO.
SY-INDEX
Loop index
ABAP statement and Keyword(con’t)
WHILE Command
WHILE <logical expression>.
statements
ENDWHILE.
SY-INDEX
Loop index
WHILE COUNTER > 0.
.
.
.
SUBTRACT 1 FROM COUNTER.
ENDWHILE.
ABAP statement and Keyword(con’t)
LOOP Command Example
LOOP AT IT_T001K.
WRITE: / IT_T001K-BWKEY.
ENDLOOP.
ABAP statement and Keyword(con’t)
WRITE Command
The basic ABAP statement for displaying data on the
screen
WRITE <f> <AT position(length)>
<option>
<AS CHECKBOX>
<AS SYMBOL>
<AS ICON>
<AS LINE>
ABAP statement and Keyword(con’t)
WRITE Command
• <OPTION> behind the WRITE statement is for formatting options
• E.g. : ..NO-ZERO, NO-SIGN, No GROUPING, DD/MM/YY,
•
LEFT-JUSTIFIED, CENTERED, RIGHT-JUSTIFIED
• The most commonly used options:
• CURRENCY w
to treat the content of field <f> as a currency amount with w as a
currency key
• DECIMALS d
to determine number of decimals to be displayed
• UNIT u
to format the value according to the unit specified in the field u.
The content of field <f> is treated as a quantity.
ABAP statement and Keyword(con’t)
WRITE Command Example
WRITE: / ‘Write’.
WRITE: it_bseg-dmbtr CURRENCY it_bkpf-hwaer.
WRITE: text-t01 LEFT-JUSTIFIED.
ABAP statement and Keyword(con’t)
Comment
• Written between statements of the ABAP program to
explain its purpose to a reader / for internal
documentation
• Helps to understand and change the program
• Flagged by special character:
• Asterisk (*) entire line to be a comment
• Double quotation mark (“) part of a line to be a
comment
• Ignored by the system
ABAP statement and Keyword(con’t)
Comment example
* Write Sales Order number to the screen
Write: ‘Sales Order : ‘,
20 it_vbak-vbeln. “Sales Order Number
ABAP statement and Keyword(con’t)
Expression & Operation
•
•
•
•
•
Relational Operator
String Comparison
Logical Expression
If/Case/Check Statement
Exit/Continue Statement
ABAP statement and Keyword(con’t)
Display
Relational Operator
EQ =
Equal to
NE <> ><
Not equal to
GT >
Greater than
GE >= =>
Greater than or equal to
LT <
Smaller than
LE <= =<
Smaller than or equal to
DATA: START TYPE D,
SUM1
TYPE F,
BETWEEN f1 and f2
SUM2
TYPE P.
IS INITIAL
.
.
.
IF START IS INITIAL ... .
IF SUM1 GT SUM2 ... .
IF SUM1
... .
Meaning
BETWEEN 0 AND 100
Interval
Initial value
ABAP statement and Keyword(con’t)
String Comparison
<f1> CO <f2>
contains only: f1 contains only characters from f2
ACCOUNT CO '0123456789'
<f1>
CA
<f2>
<f1> CS <f2>
'ABCDE'
CS
<f1> CP <f2>
'ABXDE'
CP
contains any: f1 contains at least one character
from f2
contains string: f1 contains the string f2
'DE'
contains pattern: f1 corresponds to the model f2
Model:
* any string
+ any character
# escape symbol
'*B+D*'
ABAP statement and Keyword(con’t)
Logical Expression
1. AND
2. OR
3. NOT
COUNTER GE 0
COUNTER GT 0 AND
FLAG IS INITIAL
( FLAG1 NE SPACE OR FLAG2
NE SPACE ) AND COUNTER
BETWEEN 0 AND 100
COUNTER EQ 0 AND NOT
( FLAG1 EQ SPACE AND FLAG2
EQ SPACE )
ABAP statement and Keyword(con’t)
IF <logical expression>.
IF Statement
statements
ENDIF.
IF <logical expression>.
statements
ELSE.
ENDIF.
statements
IF <logical expression>.
statements
ELSEIF <logical expression>.
statements
ELSEIF <logical expression>.
statements
ELSE.
statements
ENDIF.
ABAP statement and Keyword(con’t)
CASE statement
• Execute different
statement blocks
depending on the contents
of particular data fields
• WHEN OTHERS:
• contents of <field>
does not equal to any
of the <value?>
contents
CASE <field>.
WHEN <value1>.
statements
WHEN <value2>.
statements
WHEN <value3>.
statements
WHEN OTHERS.
statements
ENDCASE.
ABAP statement and Keyword(con’t)
CHECK statement
1
CHECK <logical expression>.
CHECK within a loop structure.
WHILE COUNTER GT 0.
• Within Loop:
to terminate loop
pass conditionally
statements
CHECK FLAG NE SPACE.
statements
ENDWHILE.
2
CHECK outside loop structures.
statements
CHECK <condition>.
statements
ABAP statement and Keyword(con’t)
• Terminate loop
entirely without
any condition
• Terminate a
subroutine
without any
condition
EXIT.
1
EXIT within a loop structure.
DO ...
statements
IF COUNTER GE 100.
EXIT.
ENDIF.
statements
2
ENDDO.
EXIT outside loop structure.
statements
IF ... .
EXIT.
ENDIF.
statements
ABAP statement and Keyword(con’t)
CONTINUE.
DO 100 TIMES.
• Terminate loop
pass
immediately
without any
condition
statements
IF SY-INDEX GE 10
AND SY-INDEX LE 20.
CONTINUE.
ENDIF.
statements
ENDDO.
ABAP statement and Keyword(con’t)
PROGRAM RSDEMO01.
Call calculate_tax
..
.
Subroutine
Calculate_tax
PROGRAM RSDEMO02.
..
.
• Avoid redundancy
• Modularization:
• easy to read
• easy to call
PROGRAM RSDEMO04.
Subroutine SUB1
Call calculate_tax
..
.
PROGRAM RSDEMO03.
..
.
Call calculate_tax
Function module
Subroutine
Calculate_tax
ABAP/4 function library
Function module
Calculate_tax
ABAP statement and Keyword(con’t)
• Define
FORM <name> [<parameters>].
<statement block>
ENDFORM.
• Calling internally
PERFORM <name> [<parameters>].
• Calling external subroutine
PERFORM <name>(program name) <parameters>
[IF FOUND]
ABAP statement and Keyword(con’t)
form f_check_file_exists using filename.
.............
endform.
Parameters:
p_path like rlgrap-filename.
..............................
perform f_check_file_exists using p_path.
Content
•Introduction R/3 Basis system overview
•ABAP/4 overview
Component, Program, ABAP dictionary, Function Module ,
Message/Transaction code, etc.
•Common Statement / Command
- Main event in ABAP program
- General ABAP command
•Transportation for ABAP objects
•Type of problem and how to investigate
Program bug, ABAP runtime error, Update terminate, Unexpected
error message.
Transportation of ABAP objects
Type of ABAP object
In Workbench organizer, there are several ABAP objects which are transportable
Object In Transport request contain the following key
PgmID:
Program Id in request and task, normally there are 2 types for ABAP objects
R3TR - name for R/3 Repository objects and Customizing objects
LIMU - enables transport of R/3 Repository object components
Obj:
Object type (for example, DOMA, DTEL, FORM, PROG..)
Object name:
Name of the each object
Funct.: Function D,K,M
ObjStatus: LOCKED,ERR_IMP,OK_IMP and OK_GEN
Transportation of ABAP objects (con’t)
Version management
serves different purposes and user groups:
- The developer can keep track of his or her work ("What have I changed?")
- The developer can restore a previous version by reactivating it.
- The system administrator can monitor work ("Which objects were changed and
how were they changed in a specific time interval?")
- It provides the basis for the auditor, who requires a complete history of
changes.
- It enables customers to adjust data with the help of the system after upgrading
to a new Release.
Transportation of ABAP objects (con’t)
ABAP object Version compare
ABAP program
Transaction code SE38, Under menu Utilities-->Version management
Function module
Transaction code SE37, Under menu Utilities-->Version management
Data Dictionary
Transaction code SE11, Under menu Utilities-->Version management
Object Browser
Transaction code SE80, Go to specific object and under menu utilities,
Version management
Workbench Organization
Transaction code SE09, under menu Environment
Transportation of ABAP objects (con’t)
ABAP object Version compare
From Version management, you can
1. Display the object in other version
2. Compare the object in 2 versions
3. Retrieve the content of older version
4. Remote compare with another system
5. Display Transport Request
Content
•Introduction R/3 Basis system overview
•ABAP/4 overview
Component, Program, ABAP dictionary, Function Module ,
Message/Transaction code, etc.
•Common Statement / Command
- Main event in ABAP program
- General ABAP command
•Transportation for ABAP objects
•Type of problem and how to investigate
Program bug, ABAP runtime error, Update terminate, Unexpected
error message.
Type of problem & How to investigate
Type of problems
ABAP Runtime Error
Cause: Program error, system exception, database process error, etc.
Using transaction code ST22 to analyze error.
Unexpected message
Update Terminate
Cause: Update module can not be completed
Program bug
Cause: Written code is not correct
ABAP Runtime error - Analysis
Error ID
Date and time
Double click to
display detail
Unexpected message
How to deal with unexpected message?
1. Go to Message long text if available.
2. Read through the section in the message help text, process where
appropriate.
Message help text component
• Diagnosis
• System response
• Procedure
3. Find the message location, the logic that drive the message
appearance.
• Debugging
• Use “Where used list” function to find out the code where
message is located (Not applicable for dynamic call)
Unexpected message (con’t)
How to debug and locate the message in the program?
1. Debugging
Set Debugger ON
In Debugging screen, Set dynamic breakpoint on command “Message”
Select debugging -> Continue (F8)
When program reach MESSAGE command, cursor will be stopped
Check the above logic before get into the current command, see the
related data/value from debugging screen.
2. Using “Where used list” Function in message workbench SE91/SE80
When message is displayed, Double click on the status bar(if the
message appear only in status bar , not popup) OR press F1 for popup
message.
Go to transaction code SE91/SE80 to find the location of the message
call.
Update terminate
Update terminate: Message/SAP internal mail will be sent to the
transaction owner, either Error message Or ABAP runtime error (short
dump) might be created.
Analyzing the error
Go to transaction code SM13 to analyze the update error.
(Or Select Tools --> Administration --> Monitoring --> Update)
Go to detail in update modules, You will get the following information:
Where the error occurred: Program name, function module, line
number and error text. (go to ABAP short dump Or Editor to locate the
position)
Why the error occurred:
Program bug
Analyzing the error
1. Find out what went wrong.
2. Locate the position in the ABAP program
How to find the right place?
1. Debugging
2. Use Call Hierarchy (SE48)
3. Use find function in ABAP editor
Simple Debugging
How to:
• Switch on the debugger.
• Set and delete static and dynamic breakpoints.
• Set Watch points.
• Stop a program at specific key words or events or when a fields
contents change.
• Continue processing after an interrupt.
• Display field contents during runtime.
• Display the contents of an internal table.
• Change field contents for testing purposes.
• Change the contents of an internal table.
• Display and use the debugger’s six different views.
Simple Debugging
Start debugging:
/h
Start the debugger in Normal mode. Press enter to start.
/hs
Start the Debugger in System mode, for example, in order to debug
the system program (program with type S)
Appropriate menu options under system -> Utilities -> Debug ABAP
Break-points Command.
SE38 Start of programs in the debugging of transaction code SE38
SM50/SM51 via debugging menu
SE80 - Object browser
Simple Debugging
Set and delete static and dynamic breakpoints
Static break-point
Command BREAK-POINT. Or BREAK <User name>
Dynamic break-point
In ABAP Editor SE38 --> Utilities --> Breakpoints --> Display/Set
In Debugging mode
Place the cursor on the statement
Choosing break-point -> Set/Delete
At ABAP command
At Event/Subroutine
At Function module
System exception
Simple Debugging
Stepping
Display mode
Single step (F5)
Field : Display content of fields up to 8 fields
Execute (F6)
Table: Display content of internal table
Return (F7)
Watchpoints: Manage watchpoint during debug mode
Continue (F8)
Calls : Display Call stack up to current statement (in
sequence)
Overview: structure of program, display event, sub
routine, module and current statement
Simple Debugging
Caution when debugging in Production system
Since only a restricted number of dialog work processes can be
switched to debugging mode, you should leave the debugger as soon as
possible when you have finished working with it. Otherwise, the work
process is not released for other users
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Simple ABAP/4 for Non