sap-abap

name	sap-abap
description	Comprehensive ABAP development skill for SAP systems. Use when writing ABAP code, working with internal tables, structures, ABAP SQL, object-oriented programming, RAP (RESTful Application Programming Model), CDS views, EML statements, ABAP Cloud development, string processing, dynamic programming, RTTI/RTTC, field symbols, data references, exception handling, or ABAP unit testing. Covers both classic ABAP and modern ABAP for Cloud Development patterns.
license	GPL-3.0
metadata	{"maintainer":"Eduard Jiglau","maintainer_email":"[e-mail]","website":"https://sap-ai-skills.com","version":"2.4.1","last_verified":"2026-04-02","abap_release":"7.40 SP08+ / 7.50+ / ABAP Cloud","sources":["https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm","https://github.com/SAP-samples/abap-cheat-sheets"]}

SAP ABAP Development Skill

Related Skills

• sap-abap-cds: Use when developing CDS views for ABAP-backed Fiori applications or defining data models with annotations
• sap-btp-cloud-platform: Use when working with ABAP Environment on BTP or deploying ABAP applications to the cloud
• sap-cap-capire: Use when connecting ABAP systems with CAP applications or integrating with OData services
• sap-fiori-tools: Use when building Fiori applications with ABAP backends or consuming OData services from ABAP systems
• sap-api-style: Use when documenting ABAP APIs or following SAP API documentation standards

When to Use This Skill

Use this skill when writing or reviewing ABAP code, modernizing classic ABAP to ABAP Cloud-compatible patterns, working with RAP or EML, implementing ABAP SQL, designing unit tests, or troubleshooting language/runtime behavior across supported ABAP releases.

Version Compatibility

This skill covers ABAP syntax from 7.40 SP08 through ABAP Cloud. Features requiring a higher release are annotated with inline comments in code examples using the format " [7.xx+] or noted in reference files. The table below summarizes the key version boundaries.

Feature	7.40 SP02	7.40 SP05	7.40 SP08	7.50	7.51	7.52	7.54
Inline declarations DATA(...)	x	x	x	x	x	x	x
Constructor operators (VALUE, NEW, CONV, COND, SWITCH, REF, EXACT, CAST)	x	x	x	x	x	x	x
Table expressions itab[...]	x	x	x	x	x	x	x
String templates	x	x	x	x	x	x	x
WITH EMPTY KEY	x	x	x	x	x	x	x
line_exists(), line_index()	x	x	x	x	x	x	x
ABAP SQL: @ host variables		x	x	x	x	x	x
ABAP SQL: comma-separated lists		x	x

On a 7.40 system: Replace any FINAL(...) with DATA(...), and avoid 7.50+ features marked in bold above. Most modern ABAP syntax (VALUE, NEW, CONV, inline declarations, table expressions, REDUCE, FILTER, GROUP BY) is available since 7.40 SP08.

Table of Contents

• Version Compatibility
• Quick Reference
• Bundled Resources
• Common Patterns
• Error Catalog
• Performance Tips
• Source Documentation

Quick Reference

Data Types and Declarations

" Elementary types
DATA num TYPE i VALUE 123.
DATA txt TYPE string VALUE `Hello`.
DATA flag TYPE abap_bool VALUE abap_true.

" Inline declarations
DATA(result) = some_method( ).
FINAL(immutable) = `constant value`.              " [7.50+] Use DATA(...) on 7.40

" Structures
DATA: BEGIN OF struc,
        id   TYPE i,
        name TYPE string,
      END OF struc.

" Internal tables
DATA itab TYPE TABLE OF string WITH EMPTY KEY.
DATA sorted_tab TYPE SORTED TABLE OF struct WITH UNIQUE KEY id.
DATA hashed_tab TYPE HASHED TABLE OF struct WITH UNIQUE KEY id.

Internal Tables - Essential Operations

" Create with VALUE
itab = VALUE #( ( col1 = 1 col2 = `a` )
                ( col1 = 2 col2 = `b` ) ).

" Read operations
DATA(line) = itab[ 1 ].                    " By index
DATA(line2) = itab[ col1 = 1 ].            " By key
READ TABLE itab INTO wa INDEX 1.
READ TABLE itab ASSIGNING FIELD-SYMBOL(<fs>) WITH KEY col1 = 1.

" Modify operations
MODIFY TABLE itab FROM VALUE #( col1 = 1 col2 = `updated` ).
itab[ 1 ]-col2 = `changed`.

" Loop processing
LOOP AT itab ASSIGNING FIELD-SYMBOL(<line>).
  <line>-col2 = to_upper( <line>-col2 ).
ENDLOOP.

" Delete
DELETE itab WHERE col1 > 5.
DELETE TABLE itab FROM VALUE #( col1 = 1 ).

ABAP SQL Essentials

" SELECT into table
SELECT * FROM dbtab INTO TABLE @DATA(result_tab).   " @ syntax: 7.40 SP05+

" SELECT with conditions
SELECT carrid, connid, fldate                          " comma syntax: 7.40 SP05+
  FROM zdemo_abap_fli
  WHERE carrid = 'LH'
  INTO TABLE @DATA(flights).

" Aggregate functions
SELECT carrid, COUNT(*) AS cnt, AVG( price ) AS avg_price
  FROM zdemo_abap_fli
  GROUP BY carrid
  INTO TABLE @DATA(stats).

" JOIN operations
SELECT a~carrid, a~connid, b~carrname
  FROM zdemo_abap_fli AS a
  INNER JOIN zdemo_abap_carr AS b ON a~carrid = b~carrid
  INTO TABLE @DATA(joined).

" Modification statements
INSERT dbtab FROM @struc.
UPDATE dbtab FROM @struc.
MODIFY dbtab FROM TABLE @itab.
DELETE FROM dbtab WHERE condition.

Constructor Expressions

" VALUE - structures and tables
DATA(struc) = VALUE struct_type( comp1 = 1 comp2 = `text` ).
DATA(itab) = VALUE itab_type( ( a = 1 ) ( a = 2 ) ( a = 3 ) ).

" NEW - create instances
DATA(dref) = NEW i( 123 ).
DATA(oref) = NEW zcl_my_class( param = value ).

" CORRESPONDING - structure/table mapping
target = CORRESPONDING #( source ).
target = CORRESPONDING #( source MAPPING target_field = source_field ).

" COND/SWITCH - conditional values
DATA(text) = COND string( WHEN flag = abap_true THEN `Yes` ELSE `No` ).
DATA(result) = SWITCH #( code WHEN 1 THEN `A` WHEN 2 THEN `B` ELSE `X` ).

" CONV - type conversion
DATA(dec) = CONV decfloat34( 1 / 3 ).

" FILTER - table filtering
DATA(filtered) = FILTER #( itab WHERE status = 'A' ).

" REDUCE - aggregation
DATA(sum) = REDUCE i( INIT s = 0 FOR wa IN itab NEXT s = s + wa-amount ).

Object-Oriented ABAP

" Class definition
CLASS zcl_example DEFINITION PUBLIC FINAL CREATE PUBLIC.
  PUBLIC SECTION.
    METHODS constructor IMPORTING iv_name TYPE string.
    METHODS get_name RETURNING VALUE(rv_name) TYPE string.
    CLASS-METHODS factory RETURNING VALUE(ro_instance) TYPE REF TO zcl_example.
  PRIVATE SECTION.
    DATA mv_name TYPE string.
ENDCLASS.

CLASS zcl_example IMPLEMENTATION.
  METHOD constructor.
    mv_name = iv_name.
  ENDMETHOD.
  METHOD get_name.
    rv_name = mv_name.
  ENDMETHOD.
  METHOD factory.
    ro_instance = NEW #( `Default` ).
  ENDMETHOD.
ENDCLASS.

" Interface implementation
CLASS zcl_impl DEFINITION PUBLIC.
  PUBLIC SECTION.
    INTERFACES zif_my_interface.
ENDCLASS.

Exception Handling

TRY.
    DATA(result) = risky_operation( ).
  CATCH cx_sy_zerodivide INTO DATA(exc).
    DATA(msg) = exc->get_text( ).
  CATCH cx_root INTO DATA(any_exc).
    " Handle any exception
  CLEANUP.
    " Cleanup code
ENDTRY.

" Raising exceptions
RAISE EXCEPTION TYPE zcx_my_exception
  EXPORTING textid = zcx_my_exception=>error_occurred.

" With COND/SWITCH
DATA(val) = COND #( WHEN valid THEN result
                    ELSE THROW zcx_my_exception( ) ).

String Processing

" Concatenation
DATA(full) = first && ` ` && last.
txt &&= ` appended`.

" String templates
DATA(msg) = |Name: { name }, Date: { date DATE = ISO }|.

" Functions
DATA(upper) = to_upper( text ).
DATA(len) = strlen( text ).
DATA(found) = find( val = text sub = `search` ).
DATA(replaced) = replace( val = text sub = `old` with = `new` occ = 0 ).
DATA(parts) = segment( val = text index = 2 sep = `,` ).

" FIND/REPLACE statements
FIND ALL OCCURRENCES OF pattern IN text RESULTS DATA(matches).
REPLACE ALL OCCURRENCES OF old IN text WITH new.

Dynamic Programming

" Field symbols
FIELD-SYMBOLS <fs> TYPE any.
ASSIGN struct-component TO <fs>.
ASSIGN struct-(comp_name) TO <fs>.  " Dynamic component

" Data references
DATA dref TYPE REF TO data.
dref = REF #( variable ).
CREATE DATA dref TYPE (type_name).
dref->* = value.

" RTTI - Get type information
DATA(tdo) = cl_abap_typedescr=>describe_by_data( dobj ).
DATA(components) = CAST cl_abap_structdescr( tdo )->components.

" RTTC - Create types dynamically
DATA(elem_type) = cl_abap_elemdescr=>get_string( ).
CREATE DATA dref TYPE HANDLE elem_type.

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Bundled Resources

This skill includes 28 comprehensive reference files covering all aspects of ABAP development:

Related Skills

• sap-abap-cds: For CDS view development and ABAP Cloud data modeling
• sap-btp-cloud-platform: For ABAP Environment setup and BTP deployment
• sap-cap-capire: For CAP service integration and ABAP system connections
• sap-fiori-tools: For Fiori application development with ABAP backends
• sap-api-style: For API documentation standards and best practices

Quick Access

• Reference Guide: references/skill-reference-guide.md - Complete guide to all reference files
• Internal Tables: references/internal-tables.md - Complete table operations
• ABAP SQL: references/abap-sql.md - Comprehensive SQL reference
• Object Orientation: references/object-orientation.md - Classes and interfaces

Development Topics

• references/constructor-expressions.md - VALUE, NEW, COND, REDUCE
• references/rap-eml.md - RAP and EML operations
• references/cds-views.md - CDS view development
• references/string-processing.md - String functions and regex
• references/unit-testing.md - ABAP Unit framework
• references/performance.md - Optimization techniques
• ... and 18 more specialized references

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Common Patterns

Safe Table Access (Avoid Exceptions)

" Using VALUE with OPTIONAL
DATA(line) = VALUE #( itab[ key = value ] OPTIONAL ).

" Using VALUE with DEFAULT
DATA(line) = VALUE #( itab[ 1 ] DEFAULT VALUE #( ) ).

" Check before access
IF line_exists( itab[ key = value ] ).
  DATA(line) = itab[ key = value ].
ENDIF.

Functional Method Chaining

DATA(result) = NEW zcl_builder( )
  ->set_name( `Test` )
  ->set_value( 123 )
  ->build( ).

FOR Iteration Expressions

" Transform table
DATA(transformed) = VALUE itab_type(
  FOR wa IN source_itab
  ( id = wa-id name = to_upper( wa-name ) ) ).

" With WHERE
DATA(filtered) = VALUE itab_type(
  FOR wa IN source WHERE ( status = 'A' )
  ( wa ) ).

" With INDEX INTO
DATA(numbered) = VALUE itab_type(
  FOR wa IN source INDEX INTO idx
  ( line_no = idx data = wa ) ).

ABAP Cloud Compatibility

" Use released APIs only
DATA(uuid) = cl_system_uuid=>create_uuid_x16_static( ).
DATA(date) = xco_cp=>sy->date( )->as( xco_cp_time=>format->iso_8601_extended )->value.
DATA(time) = xco_cp=>sy->time( )->as( xco_cp_time=>format->iso_8601_extended )->value.

" Output in cloud (if_oo_adt_classrun)
out->write( result ).

" Avoid: sy-datum, sy-uzeit, DESCRIBE TABLE, WRITE, MOVE...TO

ABAP 7.40 Compatibility

When targeting ABAP 7.40 systems, replace 7.50+ syntax with these patterns:

" Instead of FINAL (7.50+):
FINAL(value) = `constant`.              " 7.50+
DATA(value) = `constant`.               " 7.40 compatible

" Instead of host expressions (7.50+):
SELECT * FROM dbtab WHERE col = @( lv_val ).   " 7.50+
SELECT * FROM dbtab WHERE col = @lv_val.        " 7.40 compatible

" Instead of UNION (7.50+):
SELECT a FROM tab1 UNION SELECT a FROM tab2.    " 7.50+
" Use two separate SELECTs on 7.40 and combine in ABAP:
SELECT a FROM tab1 INTO TABLE @DATA(r1).
SELECT a FROM tab2 INTO TABLE @DATA(r2).
DATA(combined) = VALUE itab_type( FOR l1 IN r1 ( l1 )
                                  FOR l2 IN r2 ( l2 ) ).

" Instead of IS INSTANCE OF (7.50+):
IF oref IS INSTANCE OF zcl_my_class.    " 7.50+
" 7.40 alternative — use typed CAST with exception handling:
TRY.
    DATA(lo) = CAST zcl_my_class( oref ).  " 7.40+
  CATCH cx_sy_move_cast_error.
    " oref is not compatible with zcl_my_class
ENDTRY.

" Instead of CTEs WITH (7.51+):
WITH +cte AS ( SELECT ... ) SELECT ...  " 7.51+
" Use subqueries or temporary tables on 7.40

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Error Catalog

CX_SY_ITAB_LINE_NOT_FOUND

Cause: Table expression access to non-existent line Solution: Use OPTIONAL, DEFAULT, or check with line_exists( )

CX_SY_ZERODIVIDE

Cause: Division by zero Solution: Check divisor before operation

CX_SY_RANGE_OUT_OF_BOUNDS

Cause: Invalid substring access or array bounds Solution: Validate offset and length before access

CX_SY_CONVERSION_NO_NUMBER

Cause: String cannot be converted to number Solution: Validate input format before conversion

CX_SY_REF_IS_INITIAL

Cause: Dereferencing unbound reference Solution: Check IS BOUND before dereferencing

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Performance Tips

1. Use SORTED/HASHED tables for frequent key access
2. Prefer field symbols over work areas in loops for modification
3. Use PACKAGE SIZE for large SELECT results
4. Avoid SELECT in loops - use FOR ALL ENTRIES or JOINs
5. Use secondary keys for different access patterns
6. Minimize CORRESPONDING calls - explicit assignments are faster

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Source Documentation

All content based on SAP official ABAP Cheat Sheets:

• Repository: https://github.com/SAP-samples/abap-cheat-sheets
• SAP Help (latest): https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm
• SAP Help (7.40): https://help.sap.com/doc/abapdocu_740_index_htm/7.40/en-US/index.htm
• ABAP Release News: https://github.com/SAP-samples/abap-cheat-sheets/blob/main/33_ABAP_Release_News.md