ABAP System Fields 

ABAP system fields are always available in ABAP programs. The runtime system fills them according to context. They can then be used in programs to query the system status. System fields are variables but you should always treat them as though they were constants, and only read them. If you change their values, important information for the flow of the program may be lost. In exceptional circumstances, system fields may be overwritten in an ABAP program to control the system – for example, SY-LSIND (for navigating to a detail list).

With one exception the names and data types of the system fields are stored in the ABAP Dictionary in the SYST structure and realized as components of the predefined structure SY in ABAP programs.

The system field SY-REPID is not part of SYST or SY. Instead, every program contains the predefined constants SY-REPID and SYST-REPID, which both contain the name of the corresponding program. Furthermore, there are two predefined types of the same name, SY-REPID and SYST-REPID.

All system fields are addressed using SY field name and their types using SYST field name.

 

                                                                                                   

Alphabetical Overview

The following table lists the definitions of the structure SYST in the ABAP Dictionary alphabetically. The character in the first column indicates how you can use the corresponding system field in ABAP programs. Name is the name of the component, Type is the Dictionary data type, and Length is the field length defined in the Dictionary. The Use column shows in which environment the system fields are set. The Description indicates the content.

	Name	Type	Length	Use	Description
	ABCDE	CHAR	26	Constants	Alphabet (A,B,C,...)
	APPLI	RAW	2	Obsolete
	BATCH	CHAR	1	Background processing	Program runs in the background
	BATZD	CHAR	1	Obsolete
	BATZM	CHAR	1	Obsolete
	BATZO	CHAR	1	Obsolete
	BATZS	CHAR	1	Obsolete
	BATZW	CHAR	1	Obsolete
	BINPT	CHAR	1	Batch input	Program runs under batch input
	BREP4	CHAR	4	Obsolete
	BSPLD	CHAR	1	Obsolete
	CALLD	CHAR	1	ABAP program	Call mode of ABAP program
	CALLR	CHAR	8	Printing lists	ID for print dialog function
	CCURS	DEC	9	Obsolete
	CCURT	DEC	9	Obsolete
	CDATE	DATS	8	Obsolete
	CFWAE	CUKY	5	Internal
	CHWAE	CUKY	5	Internal
	COLNO	INT4	10	Creating lists	Current column in the list
	CPAGE	INT4	10	List processing	Current page number
	CPROG	CHAR	40	ABAP program	External procedure call
	CTABL	CHAR	4	Obsolete
	CTYPE	CHAR	1	Obsolete
	CUCOL	INT4	10	Screens	Horizontal cursor position at PAI
	CUROW	INT4	10	Screens	Vertical cursor position at PAI
	DATAR	CHAR	1	Screens	Displays user input
	DATLO	DATS	8	Date and time	Local date of user
	DATUM	DATS	8	Date and time	Current (application server) date
	DAYST	CHAR	1	Date and time	Daylight saving time flag
	DBCNT	INT4	10	Database accesses	Number of processed table rows
	DBNAM	CHAR	20	ABAP program	Linked logical database
	DBSYS	CHAR	10	SAP System	Name of central database system
	DCSYS	CHAR	4	Obsolete
	DEBUG	CHAR	1	Internal
	DSNAM	CHAR	8	Internal
	DYNGR	CHAR	4	ABAP program	Screen group of current screen.
	DYNNR	CHAR	4	ABAP program	Number of current screen
	ENTRY	CHAR	72	Internal
	FDAYW	INT1	3	Date and time	Factory calendar weekday
	FDPOS	INT4	10	Character strings	Offset in character strings
	FFILE	CHAR	8	Internal
	FLENG	INT4	10	Internal
	FMKEY	CHAR	3	Obsolete
	FODEC	INT4	10	Internal
	FOLEN	INT4	10	Internal
	FTYPE	CHAR	1	Internal
	GROUP	CHAR	1	Internal
	HOST	CHAR	8	SAP System	Name of the application server
	INDEX	INT4	10	Loops	Current loop pass
	INPUT	CHAR	1	Internal
	LANGU	LANG	1	SAP System	Current language
	LDBPG	CHAR	40	ABAP program	Program of logical database
	LILLI	INT4	10	List processing	Selected list row
	LINCT	INT4	10	Creating lists	Page length of list
	LINNO	INT4	10	Creating lists	Current row
	LINSZ	INT4	10	Creating lists	Column width of list
	LISEL	CHAR	255	List processing	Content of selected row
	LISTI	INT4	10	List processing	Index of selected list
	LOCDB	CHAR	1	Obsolete
	LOCOP	CHAR	1	Obsolete
	LOOPC	INT4	10	Screens	Number of rows visible in table
	LPASS	CHAR	4	Internal
	LSIND	INT4	10	List processing	Index of detail list
	LSTAT	CHAR	16	List processing	ID for list levels
	MACDB	CHAR	4	Obsolete
	MACOL	INT4	10	Printing lists	Columns from SET MARGIN statement
	MANDT	CLNT	3	SAP System	Client number from logon
	MARKY	CHAR	1	Obsolete
	MAROW	INT4	10	Printing lists	Rows from SET MARGIN statement
	MODNO	CHAR	1	SAP System	Index of external modes
	MSGID	CHAR	20	Messages	Message class
	MSGLI	CHAR	60	Messages	Message line
	MSGNO	NUMC	3	Messages	Message number
	MSGTY	CHAR	1	Messages	Message type
	MSGV1	CHAR	50	Messages	Message variable
	MSGV2	CHAR	50	Messages	Message variable
	MSGV3	CHAR	50	Messages	Message variable
	MSGV4	CHAR	50	Messages	Message variable
	NEWPA	CHAR	1	Internal
	NRPAG	CHAR	1	Internal
	ONCOM	CHAR	1	Internal
	OPSYS	CHAR	10	SAP System	Operating system of application server
	PAART	CHAR	16	Print parameters	Print formatting
	PAGCT	INT4	10	Obsolete
	PAGNO	INT4	10	Creating lists	Current page:
	PAUTH	NUMC	2	Internal
	PDEST	CHAR	4	Print parameters	Output device
	PEXPI	NUMC	1	Print parameters	Retention period
	PFKEY	CHAR	20	Screens	Current GUI status
	PLAYO	CHAR	5	Internal
	PLAYP	CHAR	1	Internal
	PLIST	CHAR	12	Print parameters	Name of spool request
	PNWPA	CHAR	1	Internal
	PRABT	CHAR	12	Print parameters	Part of cover sheet
	PRBIG	CHAR	1	Print parameters	Selection cover page
	PRCOP	NUMC	3	Print parameters	Number of copies
	PRDSN	CHAR	6	Print parameters	Name of spool dataset
	PREFX	CHAR	3	Obsolete
	PRI40	CHAR	1	Internal
	PRIMM	CHAR	1	Print parameters	Print immediately
	PRINI	NUMC	1	Internal
	PRLOG	CHAR	1	Internal
	PRNEW	CHAR	1	Print parameters	New spool request
	PRREC	CHAR	12	Print parameters	Recipient
	PRREL	CHAR	1	Print parameters	Delete after print
	PRTXT	CHAR	68	Print parameters	Text for cover sheet
	REPI2	CHAR	40	Internal
	REPID	CHAR	40	ABAP program	Current main program
	RSTRT	CHAR	1	Internal
	RTITL	CHAR	70	Print parameters	Title of printing program
	SAPRL	CHAR	4	SAP System	Release status of SAP System
	SCOLS	INT4	10	Screens	Number of columns
	SFNAM	CHAR	30	Obsolete
	SFOFF	INT4	10	Internal
	SLSET	CHAR	14	Selection screens	Name of variant
	SPONO	NUMC	10	Printing lists	Spool number
	SPONR	NUMC	10	Obsolete
	SROWS	INT4	10	Screens	Number of rows
	STACO	INT4	10	List processing	First displayed column
	STARO	INT4	10	List processing	Uppermost displayed row
	STEPL	INT4	10	Screens	Index of current table row
	SUBCS	CHAR	1	Internal
	SUBRC	INT4	10	Return value	Return value after ABAP statement
	SUBTY	RAW	1	Internal
	SYSID	CHAR	8	SAP System	Name of SAP System
	TABID	CHAR	8	Internal
	TABIX	INT4	10	Internal tables	Current row index
	TCODE	CHAR	20	ABAP program	Current transaction code
	TFDSN	CHAR	8	Obsolete
	TFILL	INT4	10	Internal tables	Current number of rows
	TIMLO	TIMS	6	Date and time	Local time of user
	TITLE	CHAR	70	Screens	Text in header line
	TLENG	INT4	10	Internal tables	Row size
	TLOPC	INT4	10	Internal
	TMAXL	INT4	10	Obsolete
	TNAME	CHAR	30	Obsolete
	TOCCU	INT4	10	Obsolete
	TPAGI	INT4	10	Obsolete
	TSTIS	INT4	10	Internal
	TTABC	INT4	10	Obsolete
	TTABI	INT4	10	Obsolete
	TVAR0	CHAR	20	Creating lists	Text variable for headers
	TVAR1	CHAR	20	Creating lists	Text variable for headers
	TVAR2	CHAR	20	Creating lists	Text variable for headers
	TVAR3	CHAR	20	Creating lists	Text variable for headers
	TVAR4	CHAR	20	Creating lists	Text variable for headers
	TVAR5	CHAR	20	Creating lists	Text variable for headers
	TVAR6	CHAR	20	Creating lists	Text variable for headers
	TVAR7	CHAR	20	Creating lists	Text variable for headers
	TVAR8	CHAR	20	Creating lists	Text variable for headers
	TVAR9	CHAR	20	Creating lists	Text variable for headers
	TZONE	INT4	10	Date and time	Time difference to Greenwich Mean Time
	UCOMM	CHAR	70	Screens	Function code that triggered PAI
	ULINE	CHAR	255	Constants	Horizontal line with length 255
	UNAME	CHAR	12	SAP System	Logon name of user
	UZEIT	TIMS	6	Date and time	Current (application server) time
	VLINE	CHAR	1	Constants	Vertical line
	WAERS	CUKY	5	Obsolete
	WILLI	INT4	10	Obsolete
	WINCO	INT4	10	Obsolete
	WINDI	INT4	10	Obsolete
	WINRO	INT4	10	Obsolete
	WINSL	CHAR	79	Obsolete
	WINX1	INT4	10	Obsolete
	WINX2	INT4	10	Obsolete
	WINY1	INT4	10	Obsolete
	WINY2	INT4	10	Obsolete
	WTITL	CHAR	1	Creating lists	Flag for standard page header
	XCODE	CHAR	70	Internal
	XFORM	CHAR	30	Internal
	XPROG	CHAR	40	Internal
	ZONLO	CHAR	6	Date and time	Time zone of user

Key:

	The system field is set by the runtime environment. Its content can be evaluated in the ABAP program but not changed.
	The system field is set by the runtime environment. Its content can be changed in the ABAP program to influence the runtime environment.
	The system field must be set in the ABAP program. It can then be evaluated by the runtime environment or the program.
	The system field is only for internal use and must not be used in ABAP programs.
	The system field is obsolete and its content is not set. It cannot be used in ABAP programs.

 

                                                                                                   

Thematic Overview

The following is a thematic summary of the system fields with notes on their use:

System information

·        Information on the current SAP System

·        Information on the user session

·        Date and time information

·        Information on the current ABAP program

·        Background processing

·        Batch input

ABAP programming

·        Constants

·        Character strings

·        Loops

·        Internal tables

·        Database accesses

·        Return value

Screens

·        Screens

·        Selection screens

·        Lists

·        Messages

Internal system fields

Obsolete system fields

 

                                                                                                   

System Information

Information on the Current SAP System

SY-DBSYS

Central database system, for example INFORMIX, ORACLE

SY-HOST

Application server, for example HS0333, PAWDF087

SY-OPSYS

Operating system of application server, for example HP-UX, SINIX

SY-SAPRL

Release status of the SAP System, for example 30D, 46A

SY-SYSID

Name of the SAP System, for example B20, I47

Information on the User Session

SY-LANGU

One-digit language key, for example D, E, F. Either logon language of user or set using the SET LOCALE LANGUAGE statement.

SY-MANDT

Client number the user logged on with, for example 000, 400.
For database accesses with Open SQL, SY-MANDT is used as the first key field of the WHERE clause.

SY-MODNO

Indexes external modes. Zero in first mode. In new modes, opened using the Create Mode function or by calling a transaction using /o, it is raised by 1. If previous modes were deleted, the free numbers are used first. Modes opened using CALL TRANSACTION … STARTING NEW TASK start back at 0.

SY-UNAME

Logon name of user, for example KELLERH, BC400-01.

Date and Time Information

The following system fields are always set automatically. If necessary, the GET TIME statement synchronizes the application server time with that of the database server and writes it to the system field SY-UZEIT. SY-DATUM and the system fields for the local time zone, that is SY-TIMLO, SY-DATLO, and SY-ZONLO are also reset.

SY-DATLO

Local date of user, for example 19981129, 19990628.

SY-DATUM

Current (application server) date, for example 19981130, 19990627.

SY-DAYST

During daylight saving time X, otherwise empty.

SY-FDAYW

Factory calendar weekday, Sunday 0 … Saturday 6.

SY-TIMLO

Local time of user, for example 154353, 225312.

SY-TZONE

Time difference to Greenwich Mean Time (UTC) in seconds, for example 3600, 10800.

SY-UZEIT

Current (application server) time, for example 164353, 215312.

SY-ZONLO

Time zone of user, for example CET, UTC.

Information on the Current ABAP Program

SY-CALLD

SY-CALLD contains SPACE if the program is the first and only program in a call chain. SY_CALLD contains 'X' if the program is a called program in a call chain.

·        SY-CALLD is set to ‘X‘ in a program called using CALL TRANSACTION, CALL DIALOG, or SUBMIT … AND RETURN.

·        SY-CALLD is set to space in a program called using LEAVE TO TRANSACTION, entering a transaction code on a screen, and processing batch input folders.

·        With SUBMIT (without RETURN) SY-CALLD retains the previous value.

SY-CPROG

In externally called procedures, the name of the calling program, otherwise the name of the current program. If an externally called procedure calls another external procedure, SY-CPROG keeps the name of the first main program and is not given the name of the main program of the further caller.

SY-DBNAM

With executable programs this is the linked logical database.

SY-DYNGR

Screen group of current screen. You can assign several screens to a common screen group. You can use this, for example, to modify all of the screens in the group in a uniform way.

SY-DYNNR

Number of current screen During the selection screen processing, SY-DYNNR contains the screen number of the current selection screen. During list processing, SY-DYNNR contains the number of the container screen. While a subscreen is being processed, SY-DYNNR contains its screen number. This also applies to tabstrips.

SY-LDBPG

With executable programs, the database program of the linked logical database.

SY-REPID

Name of current ABAP program. With externally called procedures this is the name of the procedure’s main program.

If SY-REPID was transferred to an external procedure as an actual parameter before Release 6.10, the formal parameter was not given the name of the caller, but the name of the procedure’s main program. SY-REID had to be transferred to an auxiliary variable before the call or you had to use SY-PROG.

As of Release 6.10, SY-REPID is a separate constant that is no longer part of the structure SYST or SY. It can be transferred to external procedures directly.

SY-TCODE

Name of current transaction code.

Background Processing

SY-BATCH

SY-BATCH is set to X in an ABAP program running in the background. Otherwise it is empty.

Batch Input

SY-BINPT

SY-BINPT is set to X during processing of batch input folders and in ABAP programs called with CALL TRANSACTION USING. Otherwise it is empty.

·         OPTIONS FROM in the CALL TRANSACTION USINGstatement can set SY-BINPT to empty for the whole program execution, as well as at the end of the BDC data.

·         In CATT procedures, SY-BINPT is always empty.

 

                                                                                                   

ABAP Programming

Constants

SY-ABCDE

Contains the Alphabet. Can be used to access individual letters independently of the codepage by specifying offset.

SY-ULINE

Contains a horizontal line with length 255. Can be used when creating the list.

SY-VLINE

Contains a vertical line (|). Can be used when creating the list

Loops

SY-INDEX

SY-INDEX contains the number of loop passes in DO and WHILE loops, including the current loop pass.

Character Strings

SY-FDPOS

Found location for operations with character-type fields.

·        If the operators CO, CN, CA, NA, CS, NS, CP, NP are used in comparisons, SY-FDPOS is assigned offset values depending on the comparison result.

·        SEARCH … FOR … sets SY-FDPOS to the offset of the found search string.

Internal Tables

SY-TABIX

Current line in an internal table. With the following statements SY-TABIX is set for index tables. With hashed tables, SY-TABIX is not filled or it is set to 0.

·        APPENDsets SY-TABIX to the index of the last table row, that is the total number of entries in the target table.

·        COLLECTsets SY-TABIX to the index of the existing or appended table row. With hashed tables, SY-TABIX is set to 0.

·        LOOP ATsets SY-TABIX to the index of the current table row at the beginning of every loop pass. After leaving a loop, SY-TABIX is set to the value it had before entering the loop. With hashed tables, SY-TABIX is set to 0.

·        READ TABLE sets SY-TABIX to the index of the table row read. If no row is found with binary search while reading, SY-TABIX contains the index of the next-highest row or the total number of rows +1. If no row is found with linear search while reading, SY-TABIX is undefined.

·        SEARCH itab FOR sets SY-TABIX to the index of the table row, in which the search string was found.

SY-TFILL

With the statements DESCRIBE TABLE, LOOP AT, and READ TABLE, SY-TFILL is filled with the row number of the addressed internal table.

SY-TLENG

With the statements DESCRIBE TABLE, LOOP AT, and READ TABLE, the system fills SY-TLENG with the row size of the addressed internal table.

Database Accesses

SY-DBCNT

SQL statements set the content of SY-DBCNT to the number of database lines processed. With SELECT loops in Open SQL, SY-DBCNT is set after the ENDSELECT statement. In Native SQL, SY-DBCNT is set after the ENDEXEC statement.

·        DELETEsets SY-DBCNT to the number of lines deleted.

·        FETCHsets SY-DBCNT to the number of lines already read by the current cursor.

·        INSERTsets SY-DBCNT to the number of lines inserted.

·        MODIFYsets SY-DBCNT to the number of lines processed.

·        UPDATE sets SY-DBCNT to the number of lines changed.

Return Value

SY-SUBRC

Return value set by the following ABAP statements. In general, a content of 0 means that the statement was executed without problems.

·        ASSIGNsets SY-SUBRC to 0 if assignment to field symbol is possible, otherwise 4.

·        ASSIGN dref->* sets SY-SUBRC to 0 if dereferencing is possible, otherwise 4.

·        AUTHORITY-CHECK sets SY-SUBRC to 0 if the user has the necessary authorization, otherwise 4, 8, 12, 16, 24, 28, 32, or 36 depending on the cause.

·        CALL DIALOG with USING sets SY-SUBRC to 0, if processing was successful, otherwise <>0.

·        CALL FUNCTION sets SY-SUBRC according to the exception handling.

·        CALL METHOD sets SY-SUBRC according to the exception handling.

·        CALL SELECTION-SCREEN sets SY-SUBRC to 0 if the user chose Enter or Execute and 4 if the user chose Cancel.

·        CALL TRANSACTION with USING sets SY-SUBRC to 0 if processing was successful, otherwise <>0.

·        CATCH SYSTEM-EXCEPTIONS sets SY-SUBRC if there are runtime errors after the ENDCATCH statement. The value is specified in the program.

·        COMMIT WORK sets SY-SUBRC to 0.

·        COMMIT WORK AND WAIT sets SY-SUBRC to 0 if update was successful, otherwise <>0.

·        COMMUNICATION INIT DESTINATION … RETURNCODE sets SY-SUBRC as specified.

·        CONCATENATE sets SY-SUBRC to 0 if the result fits into target variable, otherwise 4.

·        CREATE OBJECT sets SY-SUBRC if the exceptions of the instance constructor are handled.

·        CREATE OBJECT in OLE2 sets SY-SUBRC to 0 if an external object was created, otherwise 1,2, 3 with different causes.

·        DELETEsets SY-SUBRC to 0 if operation was successful, otherwise 4 or <> 0 depending on cause.

·        DEMAND … MESSAGES INTO sets SY-SUBRC to 0 if a message table is empty, otherwise <> 0.

·        DESCRIBE LIST sets SY-SUBRC to 0 if row or list exists, otherwise 4 or 8.

·        EXEC SQL - ENDEXEC sets SY-SUBRC to 0 in almost all cases. Only if no set was read with FETCH is SY-SUBRC 4.

·        FETCHsets SY-SUBRC to 0 if at least one row was read, otherwise 4.

·        GENERATE SUBROUTINE POOL sets SY-SUBRC to 0 if generation was successful, otherwise 8.

·        GET CURSOR sets SY-SUBRC to 0 if the cursor is correctly positioned, otherwise 4.

·        GET PARAMETER sets SY-SUBRC to 0 if value found in SAP Memory, otherwise 4.

·        IMPORTsets SY-SUBRC to 0 if import of data objects was successful, otherwise 4.

·        INSERTsets SY-SUBRC to 0 if operation was successful, otherwise 4.

·        LOAD REPORT sets SY-SUBRC to 0 if operation was successful, otherwise 4 or 8 depending on cause.

·        LOOPsets SY-SUBRC to 0 if loop over extract was passed at least once, otherwise 4.

·        LOOP ATsets SY-SUBRC to 0 if loop over internal table was passed at least once, otherwise 4.

·        MODIFYsets SY-SUBRC to 0 if operation was successful, otherwise 4.

·        MODIFY LINE sets SY-SUBRC to 0 if list row was changed, otherwise <> 0.

·        MODIFYsets SY-SUBRC to 0 if operation was successful, otherwise 4.

·        OLE2 automation, bundled commands set SY-SUBRC to 0 if all were successfully executed, otherwise 1, 2, 3, 4 depending on cause.

·        OPEN DATASET sets SY-SUBRC to 0 if the file was opened, otherwise 8.

·        Open SQL commands set SY-SUBRC to 0 if operation was successful, otherwise <>0.

·        OVERLAYsets SY-SUBRC to 0 if at least one character is overlayed, otherwise 4.

·        READ DATASET sets SY-SUBRC to 0 if the read operation was successful, otherwise 4 or 8 depending on cause.

·        READ LINE sets SY-SUBRC to 0 if list row exists, otherwise <> 0.

·        READ TABLE sets SY-SUBRC to 0 if the table row was found, otherwise 2, 4, 8 depending on cause.

·        REPLACEsets SY-SUBRC to 0 if search string could be replaced, otherwise <> 0.

·        ROLLBACK WORK always sets SY-SUBRC to 0.

·        SCROLLsets SY-SUBRC to 0 if scrolling in list successful, otherwise 4 or 8 depending on cause.

·        SEARCHsets SY-SUBRC to 0 if search string was found, otherwise 4.

·        SELECTsets SY-SUBRC to 0 if at least one row was read, otherwise 4 or even 8 with SELECT SINGLE FOR UPDATE.

·        SET COUNTRY sets SY-SUBRC to 0 if country ID was found in table T005X, otherwise 4.

·        SET BITsets SY-SUBRC to 0 if bit was set, otherwise <> 0.

·        SET TITLEBAR sets SY-SUBRC to 0 if title exists, otherwise 4.

·        SHIFT … UP TO sets SY-SUBRC to 0 if position was found in character string, otherwise 4.

·        SPLITsets SY-SUBRC to 0 if size of target fields is sufficient, otherwise 4.

·        UPDATEsets SY-SUBRC to 0 if operation successful, otherwise 4.

·        WRITE … TO sets SY-SUBRC to 0 if assignment successful, otherwise 4.

 

                                                                                                   

Screens

Screens

System fields are set at the PAI event for every screen. These can be also used for interactive list processing, except for SY-DATAR, SY-LOOPC, and SY-STEPL.

SY-CUCOL

Horizontal cursor position Counting starts at column 2

SY-CUROW

Vertical cursor position Counting starts at row 1

SY-DATAR

Set to X at time of PAI if at least one screen input field was changed by the user or other data transfer, otherwise empty.

SY-LOOPC

Number of rows currently displayed in a screen table (table control).

SY-PFKEY

GUI status of current screen. Can be set at PBO using SET PF-STATUS.

SY-SCOLS

Number of columns in current screen.

SY-SROWS

Number of rows in current screen.

SY-STEPL

Index of current row in a screen table (table control). Is set at every loop pass. Outside a loop, for example during the POV event for a table row, SY-STEPL is not set appropriately.

SY-TITLE

Text that appears in the title bar of the screen. For selection screens and lists this is the program name, otherwise SAP. Can be set during PBO using SET TITLEBAR.  

SY-UCOMM

Function code that triggered the event PAI. Every user action that triggers PAI is assigned a unique function code, with one exception: Choosing ENTER triggers PAI and different function codes can be transferred to SY-UCOMM:

·        If there is an entry in the command field of the standard toolbar, this is transferred to SY-UCOMM as the function code.

·        If there is no entry in the command field and a function code is assigned to the ENTER key, this function code is transferred to SY-UCOMM.

·        If the command field does not contain an entry and no function code is assigned to the ENTERkey, it is empty and the content of SY-UCOMM is not affected.

Selection Screens

SY-SLSET

Variant used to fill the selection screen.

Creating Lists

When creating a list you can use the following system fields to navigate. They help to ensure that output statements do not overwrite any existing output and that the system does not try to write outside the list. The current output position is always in the system fields SY-COLNO and SY-LINNO and is rest for every output statement. The remaining system fields contain further values for the list creation.

SY-COLNO

Current column during list creation. Counting starts at 1. SY-COLNO is set by the following output statements:

·        WRITE, ULINE, SKIPset SY-COLNO to the next output position.

·        BACKsets SY-COLNO to 1.

·        POSITION col sets  SY-COLNO to col. If collies outside the page, the subsequent output statements are ignored.

·        NEW-LINE sets SY-COLNO to 1.

·        NEW-PAGE sets SY-COLNO to 1.

SY-LINCT

Page length of list. SY-LINCT is 0 for a standard list of any length and has a value unequal to 0 for lists with fixed page length.

·        LINE-COUNT in the statements REPORT, PROGRAM, FUNCTION POOL sets SY-LINCT for the current program.

·        LINE-COUNT in the SUBMIT statement sets SY-LINCT for the called program.

SY-LINNO

Current row during the list creation. Counting begins at 1 and includes the page header. SY-LINNO is set by the following output statements:

·        WRITE, ULINE, SKIPraise SY-LINNO by 1 in the case of a line break.

·        BACK sets SY-LINNO to the first row after the page header. BACKin connection with RESERVE sets SY-LINNO to the first row of a block of lines.

·        NEW-LINE raises SY-LINNO by 1.

·        SKIP TO LINE lin sets SY-LINNO to lin. If lin does not lie between 1 and the page length, the system ignores the statement.

SY-LINSZ

Line width of list Without further influence this is the standard window width: If SY-SCOLS >= 84, SY-LINSZ = SY-SCOLS; if SY-SCOLS < 84, SY-LINSZ = 84.  

To change the width of the output list, use the LINE-SIZE option of the REPORTor NEW PAGE statement.

·        LINE-SIZE in the statements REPORT, PROGRAM, FUNCTION POOL sets SY-LINSZ for the current program.

·        LINE-SIZE in the SUBMIT statement sets SY-LINSZ for the called program.

SY-PAGNO

Current page during the list creation.

·        WRITE, ULINE, SKIPraise SY-PAGNO by 1 in the case of a line break.

·        NEW-PAGE raises SY-PAGNO by 1, but only if at least one output follows both on the current page and after the NEW-PAGE statement.

·        NEW-SECTION of the NEW-PAGE PRINT ON statement sets SY-PAGNO to 1.

SY-TVAR0 ... SY-TVAR9

In the program, you can assign values to these system fields. During the TOP-OF-PAGE event, the system replaces the placeholders of the program’s list and column headers with the contents of the system fields SY-TVAR0 to SYTVAR9.

SY-WTITL

Is set to N in the statements REPORT, PROGRAM, and FUNCTION-POOLif the NO STANDARD PAGE HEADING addition is used, otherwise empty. NEW-PAGE does not set SY-WTITL.

List Processing

At each interactive list event and for READ LINE, the system automatically fills the following system fields:

SY-CPAGE

Page number of the first displayed page of the list from which the event was triggered. Counting starts at 1

SY-LILLI

Line from which the event was triggered Counting begins at 1 and includes the page header.

SY-LISEL

Contents of the line from which the event was triggered

SY-LISTI

Index of the list from which the event was triggered

SY-LSIND

Index of the list that is being created (basic list: 0, detail list > 0). Each time an interactive list event occurs, the system automatically increases SY-LSIND by 1. SY-LSIND can be changed in the ABAP program to navigate between detail lists. Changes to SY-LSIND are not taken into account until the end of the list event. Therefore, any manipulation of SY-LISND should be done using the last command of the processing block.

SY-LSTAT

ID for list levels within the program. SY-LSTAT can be filled with values during list creation in the ABAP program. The value valid when the list is completed is saved with the list. In the case of an interactive list event, SY-LSTAT is set to the value it was assigned during the creation of the list from which the event takes place. SY-LSTAT is no longer maintained and should therefore no longer be used.

SY-STACO

Number of the first displayed column of the list from which the event was triggered. Counting starts at 1.

SY-STARO

Number of the upper-most displayed row of the upper-most page of the list, from which the event was triggered. Counting begins at 1. This does not include the page header.

Printing Lists

When printing lists, the spool and runtime systems require certain internal information, which is available in the following system fields and is set during print activation.

SY-CALLR

Contains a value that displays where printing was started, for example NEW-PAGE for program-controlled printing or RSDBRUNT for printing from the selection screen.

SY-PRDSN

Contains the name of the spool file during printing.

SY-SPONO

Contains the name of the spool number during printing.

SY-MAROW, SY-MACOL

The SET MARGINstatement fills the system fields SY-MAROW and SY-MACOL, which determine the number of lines on the upper margin and the number of columns on the left margin when printing.

Print Parameters

The print parameters are transferred to the spool system by the runtime system in a structure of dictionary type PRI_PARAMS. Before this structure was used, its purpose was served by system fields. Today a subset of the PRI_PARAMS structure is still written to system fields with the same names when printing is activated. This information is redundant and should not be used.

Messages

If you execute the MESSAGE statement, the following system fields are set. If you execute the MESSAGE … RAISING statement in function modules and methods, these fields are also set in the calling program, if it handles the exception.

SY-MSGID

SY-MSGID contains the message ID.

SY-MSGNO

SY-MSGNO contains the message number.

SY-MSGTY

SY-MSGTY contains the message type.

SY-MSGV1,…,SY-MSGV4

SY-MSGV1 to SY-MSGV4 contain the field contents that are used for the message’s placeholders. 

Special Actions that Fill Message Fields

·        If you request database locks using the ENQUEUE function module, the field SY-MSGV1 contains the name of the user who holds the lock, in the case of the FOREIGN_LOCK exception.

·        IN the case of CALL TRANSACTION or CALL DIALOG with the USING addition, a message displayed during the called screen sequence is returned in the fields SY-MSGID, SY-MSGTY, SY-MSGNO, SY-MSGV1, ... , SY-MSGV4.

·        During Remote Function Call (RFC), error messages are transferred from the remote system to the calling system and SY-MSGID, SY-MSGTY, SY-MSGNO,SY-MSGV1, SY-MSGV2, SY-MSGV3, SY-MSGV4 are set. If short dumps or type X messages occur, the system also sets the fields.

 

                                                                                                   

Internal system fields

Internal system fields are only for internal use in the ABAP runtime environment and are defined in the kernel. Under no circumstances must they be overwritten in ABAP programs and they should also not be read (processed).

SY-CFWAE

Undocumented

SY-CHWAE

Undocumented

SY-DEBUG

Undocumented

SY-DSNAM

Name of spool output file.

SY-ENTRY

Undocumented

SY-FFILE

Flat file (USING/GENERATING DATASET).

SY-FLENG

Length of a field.

SY-FODEC

Number of decimal places of a field.

SY-FOLEN

Output length of a field.

SY-FTYPE

Data type of a field.

SY-GROUP

Bundling

SY-INPUT

Undocumented

SY-LPASS

Undocumented

SY-NEWPA

Undocumented

SY-NRPAG

Undocumented

SY-ONCOM

On Commit flag. This system field is set to different values depending on the call status of an ABAP program. Of these, only the value of ‘P’ is guaranteed. If at all, SY-ONCOM must only be queried for ‘P’.

The value 'P' means that the program is already executing a subroutine started using PERFORM … ON COMMIT and therefore a further subroutine call using PERFORM ... ON COMMIT would cause a runtime error.

SY-PAUTH

Undocumented

SY-PLAYO

Undocumented

SY-PLAYP

Undocumented

SY-PNWPA

Undocumented

SY-PRI40

Undocumented

SY-PRINI

Undocumented

SY-PRLOG

Undocumented

SY-REPI2

Undocumented

SY-RSTRT

Undocumented

SY-SFOFF

Undocumented

SY-SUBCS

Call status of an executable program.

SY-SUBTY

Call type of an executable program.

SY-TABID

Undocumented

SY-TLOPC

Undocumented

SY-TSTIS

Undocumented

SY-XCODE

Extended function code Is filled, like SY-UCOMM, by user actions on lists. Before the length of SY-UCOMM was increased from 4 to 70 characters, SY-XCODE was used internally to evaluate lengthy entries in the command field of the list’s standard toolbar. Use SY-UCOMM in application programs.

SY-XFORM

SYSTEM-EXIT subroutine.

SY-XPROG

SYSTEM-EXIT program.

 

                                                                                                   

Obsolete System Fields

In the transition from R/2 to R/3, some system fields were carried over that are no longer filled. These system fields are obsolete and can no longer be used.

SY-APPLI

In R/2, ID for which SAP applications are installed. No longer filled.

SY-BATZD

In R/2, ID for daily background scheduling. No longer filled.

SY-BATZM

In R/2, ID for monthly background scheduling. No longer filled.

SY-BATZO

In R/2, ID for single background scheduling. No longer filled.

SY-BATZS

In R/2, ID for immediate background scheduling. No longer filled.

SY-BATZW

In R/2, ID for weekly background scheduling. No longer filled.

SY-BREP4

In R/2, root name of request report for background processing. No longer filled.

SY-BSPLD

In R/2, ID for immediate spool output for background processing. No longer filled.

SY-CCURS

In R/2, rate specification/result field from CURRENCY CONVERSION. No longer filled.

SY-CCURT

In R/2, table rate from CURRENCY CONVERSION. No longer filled.

SY-CDATE

In R/2, rate date from CURRENCY CONVERSION. No longer filled.

SY-CTABL

In R/2, rate table from CURRENCY CONVERSION. No longer filled.

SY-CTYPE

In R/2, rate type from CURRENCY CONVERSION. No longer filled.

SY-DCSYS

Dialog system of R/2 System No longer filled.

SY-FMKEY

Previously, current function code menu. No longer filled.

SY-LOCDB

Local database, not implemented.

SY-LOCOP

Local database operation, not implemented.

SY-MACDB

Previously, name of file for matchcode access. No longer filled.

SY-MARKY

Current line character for the MARK statement. However, the language element MARK will only be supported for a short time.

SY-PAGCT

In R/2, maximum number of pages per list. No longer filled.

SY-PREFX

ABAP prefix for background jobs. No longer filled.

SY-SFNAM

Undocumented

SY-SPONR

In R/2, you could process spool files using the TRANSFER statement, set by SY-SPONR. No longer filled.

SY-TFDSN

Previously, name of external storage file for extracts. No longer filled.

SY-TMAXL

Previously, maximum number of entries in an internal table. No longer filled.

SY-TNAME

Previously, name of an internal table after an access. No longer filled.

SY-TOCCU

With the statements DESCRIBE TABLE, LOOP AT, and READ TABLE, SY-TOCCU was filled with the value of the initial main memory requirements for the addressed internal table. No longer filled.

SY-TPAGI

Previously, ID whether an internal table is stored in the paging area. No longer filled.

SY-TTABC

Previously, index of last read row in an internal table. No longer filled.

SY-TTABI

Previously, offset of internal tables in roll area. No longer filled.

SY-WAERS

Previously, company code currency after reading booking segment. No longer filled.

SY-WILLI

In R/2, number of selected list row for detail list in window. Use SY-LILLI.

SY-WINCO

In R/2, cursor position for detail list in window. Use SY-CUCOL.

SY-WINDI

In R/2, index of list for detail list in window. Use SY-LSIND.

SY-WINRO

In R/2, cursor position for detail list in window. Use SY-CUROW.

SY-WINSL

In R/2, content of selected row for detail list in window. Use SY-LISEL.

SY-WINX1

In R/2, window coordinate for detail list in window. No longer used.

SY-WINX2

In R/2, window coordinate for detail list in window. No longer used.

SY-WINY1

In R/2, window coordinate for detail list in window. No longer used.

SY-WINY2

In R/2, window coordinate for detail list in window. No longer used.