Sometime it is little bit tricky to find out a name for new variable in ABAP until you do not break into a set of reserved ABAP keyword. Basically such a set of reserved words are all the ABAP statements key words, logical operators, data types, predefined functions, etc. According official SAP documentation (see TA ABAPDOCU -> ABAP - By Theme -> ABAP syntax -> ABAP Statements ->ABAP Words) usage of those key words is not forbidden (see picture) we should try avoiding using them. It might happen that there will be some new key words added and your code will not be compatible with further new version of SAP ABAP/Basis/WAS component.
Therefore while you designing new variable names consider following names as those which are forbidden and you cannot use them as variable names:
ABAP-SOURCE | ABBREVIATED | ABS | ABSTRACT | ACCEPT |
ACCEPTING | ACCORDING | ACOS | ACTIVATION | ACTUAL |
ADD | ADD-CORRESPONDING | ADJACENT | AFTER | ALIASES |
ALL | ALLOCATE | ANALYSIS | ANALYZER | AND |
ANY | APPEND | APPENDAGE | APPENDING | APPLICATION |
ARCHIVE | AREA | ARITHMETIC | AS | ASCENDING |
ASIN | ASSERT | ASSIGN | ASSIGNED | ASSIGNING |
AT | ATAN | ATTRIBUTES | AUTHORITY | AUTHORITY-CHECK |
AVG | BACK | BACKGROUND | BACKUP | BACKWARD |
BADI | BEFORE | BEGIN | BETWEEN | BIG |
BINARY | BIT | BIT-AND | BIT-NOT | BIT-OR |
BIT-XOR | BLACK | BLANK | BLANKS | BLOCK |
BLOCKS | BLUE | BOUND | BOUNDARIES | BOUNDS |
BREAK-POINT | BT | BUFFER | BY | BYPASSING |
BYTE | BYTE-CA | BYTE-CN | BYTE-CO | BYTE-CS |
BYTE-NA | BYTE-NS | BYTE-ORDER | C | CA |
CALL | CALLING | CASE | CASTING | CATCH |
CEIL | CENTERED | CHAIN | CHAIN-INPUT | CHAIN-REQUEST |
CHANGE | CHANGING | CHAR-TO-HEX | CHARACTER | CHARLEN |
CHECK | CHECKBOX | CIRCULAR | CLASS | CLASS-CODING |
CLASS-DATA | CLASS-EVENTS | CLASS-METHODS | CLASS-POOL | CLEANUP |
CLEAR | CLIENT | CLIKE | CLOCK | CLOSE |
CN | CO | CODE | CODEPAGE | CODING |
COL_BACKGROUND | COL_GROUP | COL_HEADING | COL_KEY | COL_NEGATIVE |
COL_NORMAL | COL_POSITIVE | COL_TOTAL | COLLECT | COLOR |
COLUMN | COMMENT | COMMENTS | COMMIT | COMMON |
COMMUNICATION | COMPARING | COMPONENT | COMPONENTS | COMPRESSION |
COMPUTE | CONCATENATE | CONDENSE | CONDITION | CONNECT |
CONNECTION | CONSTANTS | CONTEXT | CONTEXTS | CONTINUE |
CONTROL | CONTROLS | CONVERSION | CONVERT | COPIES |
COPY | CORRESPONDING | COS | COSH | COUNT |
COUNTRY | COVER | CP | CPI | CREATE |
CS | CSEQUENCE | CURRENCY | CURRENT | CURSOR |
CURSOR-SELECTION | CUSTOMER-FUNCTION | D | DATA | DATABASE |
DATAINFO | DATASET | DATE | DAYLIGHT | DBMAXLEN |
DD/MM/YY | DD/MM/YYYY | DDMMYY | DEALLOCATE | DECIMALS |
DEFAULT | DEFERRED | DEFINE | DEFINING | DEFINITION |
DELETE | DELETING | DEMAND | DEPARTMENT | DESCENDING |
DESCRIBE | DESTINATION | DETAIL | DIALOG | DIRECTORY |
DISCONNECT | DISPLAY | DISPLAY-MODE | DISTANCE | DISTINCT |
DIV | DIVIDE | DIVIDE-CORRESPONDING | DO | DUMMY |
DUPLICATE | DUPLICATES | DURING | DYNAMIC | DYNPRO |
E | EDIT | EDITOR-CALL | ELSE | ELSEIF |
ENABLED | ENABLING | ENCODING | END | END-ENHANCEMENT-SECTION |
END-LINES | END-OF-DEFINITION | END-OF-FILE | END-OF-PAGE | END-OF-SELECTION |
ENDAT | ENDCASE | ENDCATCH | ENDCHAIN | ENDCLASS |
ENDDO | ENDENHANCEMENT | ENDEXEC | ENDFORM | ENDFUNCTION |
ENDIAN | ENDIF | ENDING | ENDINTERFACE | ENDLOOP |
ENDMETHOD | ENDMODULE | ENDON | ENDPROVIDE | ENDSELECT |
ENDTRY | ENDWHILE | ENHANCEMENT | ENHANCEMENT-POINT | ENHANCEMENT-SECTION |
ENHANCEMENTS | ENTRIES | ENTRY | ENVIRONMENT | EQ |
ERRORMESSAGE | ERRORS | ESCAPE | ESCAPING | EVENT |
EVENTS | EXCEPTION | EXCEPTION-TABLE | EXCEPTIONS | EXCLUDE |
EXCLUDING | EXEC | EXECUTE | EXISTS | EXIT |
EXIT-COMMAND | EXP | EXPAND | EXPIRATION | EXPLICIT |
EXPONENT | EXPORT | EXPORTING | EXTENDED | EXTENSION |
EXTRACT | F | FETCH | FIELD | FIELD-GROUPS |
FIELD-SYMBOLS | FIELDS | FILE | FILTER | FILTERS |
FINAL | FIND | FIRST | FIRST-LINE | FIXED-POINT |
FKEQ | FKGE | FLOOR | FLUSH | FONT |
FOR | FORM | FORMAT | FORWARD | FOUND |
FRAC | FRAME | FRAMES | FREE | FRIENDS |
FROM | FTO | FUNCTION | FUNCTION-POOL | GAPS |
GE | GENERATE | GET | GIVING | GKEQ |
GKGE | GLOBAL | GREEN | GROUP | GROUPS |
GT | HANDLE | HANDLER | HASHED | HAVING |
HEAD-LINES | HEADER | HEADERS | HEADING | HELP-ID |
HELP-REQUEST | HIDE | HIGH | HINT | HOLD |
HOTSPOT | I | ICON | ID | IDENTIFICATION |
IDENTIFIER | IDS | IF | IGNORING | IMMEDIATELY |
IMPLEMENTATION | IMPLEMENTATIONS | IMPORT | IMPORTING | IN |
INCLUDE | INCLUDES | INCLUDING | INCREMENT | INDEX |
INDEX-LINE | INFOTYPES | INHERITING | INIT | INITIAL |
INITIALIZATION | INNER | INOUT | INPUT | INSERT |
INSTANCES | INTENSIFIED | INTERFACE | INTERFACE-POOL | INTERFACES |
INTERNAL | INTERVALS | INTO | INVERSE | INVERTED-DATE |
IS | JOB | JOIN | KEEP | KEEPING |
KERNEL | KEY | KEYS | KEYWORDS | KIND |
LANGUAGE | LAST | LATE | LAYOUT | LE |
LEADING | LEAVE | LEFT | LEFT-JUSTIFIED | LEGACY |
LENGTH | LEVEL | LEVELS | LIKE | LINE |
LINE-COUNT | LINE-SELECTION | LINE-SIZE | LINEFEED | LINES |
LIST | LIST-PROCESSING | LISTBOX | LITTLE | LOAD |
LOAD-OF-PROGRAM | LOCAL | LOCALE | LOG | LOG-POINT |
LOG10 | LOGFILE | LOOP | LOW | LOWER |
LPI | LT | M | MAIL | MAIN |
MAJOR-ID | MARGIN | MARK | MASK | MATCH |
MATCHCODE | MAX | MAXIMUM | MEMORY | MESSAGE |
MESSAGE-ID | MESSAGES | METHOD | METHODS | MIN |
MINIMUM | MINOR-ID | MM/DD/YY | MM/DD/YYYY | MMDDYY |
MOD | MODE | MODIF | MODIFIER | MODIFY |
MODULE | MOVE | MOVE-CORRESPONDING | MULTIPLY | MULTIPLY-CORRESPONDING |
N | NA | NAME | NAMETAB | NATIVE |
NB | NE | NESTING | NEW | NEW-LINE |
NEW-PAGE | NEW-SECTION | NEXT | NO | NO-DISPLAY |
NO-EXTENSION | NO-EXTENSIONS | NO-GAP | NO-GAPS | NO-GROUPING |
NO-HEADING | NO-SCROLLING | NO-SIGN | NO-TITLE | NO-TOPOFPAGE |
NO-ZERO | NODE | NODES | NON-UNICODE | NON-UNIQUE |
NOT | NP | NS | NULL | NUMBER |
NUMERIC | NUMOFCHAR | O | OBJECT | OBJECTS |
OBLIGATORY | OCCURRENCE | OCCURRENCES | OCCURS | OF |
OFF | OFFSET | OLE | ON | ONLY |
OPEN | OPTION | OPTIONAL | OPTIONS | OR |
ORDER | OTHERS | OUT | OUTER | OUTPUT |
OUTPUT-LENGTH | OVERFLOW | OVERLAY | P | PACK |
PACKAGE | PADDING | PAGE | PAGES | PARAMETER |
PARAMETER-TABLE | PARAMETERS | PART | PATTERN | PERCENTAGE |
PERFORM | PERFORMING | PERSON | PF | PF-STATUS |
PINK | PLACES | POOL | POSITION | PRECOMPILED |
PREFERRED | PRESERVING | PRIMARY | PRINT | PRINT-CONTROL |
PRIORITY | PRIVATE | PROCEDURE | PROCESS | PROGRAM |
PROPERTY | PROTECTED | PROVIDE | PUBLIC | PUSHBUTTON |
PUT | QUEUE-ONLY | QUICKINFO | RADIOBUTTON | RAISE |
RAISING | RANGE | RANGES | READ | READ-ONLY |
RECEIVE | RECEIVED | RECEIVER | RECEIVING | RED |
REDEFINITION | REF | REFERENCE | REFRESH | REGEX |
REJECT | RENAMING | REPLACE | REPLACEMENT | REPLACING |
REPORT | REQUEST | REQUESTED | RESERVE | RESET |
RESOLUTION | RESPECTING | RESPONSIBLE | RESULT | RESULTS |
RETURN | RETURNCODE | RETURNING | RFC | RIGHT |
RIGHT-JUSTIFIED | ROLLBACK | ROUND | ROWS | RUN |
SAP | SAP-SPOOL | SAVING | SCAN | SCREEN |
SCROLL | SCROLL-BOUNDARY | SCROLLING | SEARCH | SECONDS |
SECTION | SELECT | SELECT-OPTIONS | SELECTION | SELECTION-SCREEN |
SELECTION-SET | SELECTION-SETS | SELECTION-TABLE | SELECTIONS | SEND |
SEPARATE | SEPARATED | SET | SHARED | SHIFT |
SHORTDUMP-ID | SIGN | SIMPLE | SIN | SINGLE |
SINH | SIZE | SKIP | SKIPPING | SMART |
SOME | SORT | SORTABLE | SORTED | SOURCE |
SPECIFIED | SPLIT | SPOOL | SPOTS | SQL |
SQRT | STABLE | STAMP | STANDARD | START-OF-SELECTION |
STARTING | STATE | STATEMENT | STATEMENTS | STATIC |
STATICS | STATUSINFO | STEP-LOOP | STOP | STRING |
STRLEN | STRUCTURE | STRUCTURES | SUBKEY | SUBMATCHES |
SUBMIT | SUBROUTINE | SUBSCREEN | SUBSTRING | SUBTRACT |
SUBTRACT-CORRESPONDING | SUFFIX | SUM | SUMMARY | SUMMING |
SUPPLIED | SUPPLY | SUPPRESS | SWITCH | SWITCHSTATES |
SYMBOL | SYNCPOINTS | SYNTAX-CHECK | SYNTAX-TRACE | SYSTEM-CALL |
SYSTEM-EXCEPTIONS | SYSTEM-EXIT | T | TAB | TABBED |
TABLE | TABLES | TABLEVIEW | TABSTRIP | TAN |
TANH | TASK | TEST | TESTING | TEXT |
TEXTPOOL | THEN | TIME | TIMES | TITLE |
TITLE-LINES | TITLEBAR | TO | TOKENIZATION | TOKENS |
TOP-LINES | TOP-OF-PAGE | TRACE-FILE | TRACE-TABLE | TRAILING |
TRANSACTION | TRANSFER | TRANSFORMATION | TRANSLATE | TRANSPORTING |
TRMAC | TRUNC | TRUNCATE | TRUNCATION | TRY |
TYPE | TYPE-POOL | TYPE-POOLS | TYPES | ULINE |
UNASSIGN | UNDER | UNICODE | UNIQUE | UNIT |
UNIX | UNPACK | UNTIL | UP | UPDATE |
UPPER | USER | USER-COMMAND | USING | UTF-8 |
VALID | VALUE | VALUE-REQUEST | VALUES | VARY |
VARYING | VERIFICATION-MESSAGE | VERSION | VIA | VISIBLE |
WAIT | WARNING | WHEN | WHENEVER | WHERE |
WHILE | WIDTH | WINDOW | WINDOWS | WITH |
WITH-HEADING | WITH-TITLE | WITHOUT | WORD | WORK |
WRITE | X | XML | XSEQUENCE | XSTRING |
XSTRLEN | YELLOW | YYMMDD | Z | ZONE |
