C/AL Reserved Words

Microsoft Dynamics Nav 2009

C/AL has several reserved words that you cannot use as variable, constant, or function names in your application. Reserved words include the following types:

Data types
Keywords
Functions
Operators
Properties
System variable names
Triggers

In some cases, you can use reserved words as variable names if you enclose the variable name in quotation marks. However, we do not recommend this practice.

If you write code on client report definition (RDLC) report layouts, then verify that your code does not use Visual Studio Report Designer reserved words. For more information, see Using Expressions in a Report (Visual Studio Report Designer) and its subtopics.

List of reserved words

The following table lists all of the C/AL reserved words.

Reserved word	Type
Abs	Function
Activate	Function
Active	Function
ActiveControlOnOpen	Property
Addlink	Function
Addtext	Function
AltSearchField	Property
And	Operator
Applicationpath	Function
Array	Functions
ArrayLen	Function
Ascending	Function
AssertError	Keyword
AssistEdit	Property
AutoCalcField	Property
AutoEnter	Property
AutoFormatExpr	Property
AutoFormatType	Property
AutoIncrement	Property
Automation	Data type
AutoPosition	Property
AutoRepeat	Property
AutoReplace	Property
AutoSave	Property
AutoSplitKey	Property
AutoUpdate	Property
BackColor	Property
BackTransparent	Property
BackupKey	Property
Beep	Function
Begin	Keyword
BigInteger	Data type
BigText	Data type
Binary	Data type
Bitmap	Property
BitmapList	Property
BitmapPos	Property
BlankNumbers	Property
BlankZero	Property
BLOB	Data type
Boolean	Data type
Border	Property
BorderColor	Property
BorderStyle	Property
BorderWidth	Property
BottomMargin	Property
Break	Function
CalcDate	Function
CalcField	Function
CalcFields	Function, Property
CalcFormula	Property
CalcSum	Function
CalcSums	Function
CallFieldValidate	Property
Cancel	Property
Caption	Function, Property
CaptionBar	Property
CaptionClass	Property
CaptionML	Property
CardFormID	Property
Case	Keyword
ChangeCompany	Function
Char	Data type
CharAllowed	Property
ChartPartID	Property
CheckLicenseFile	Function
Class	Function
Clear	Function
ClearAll	Function
ClearLastError	Function
ClearMarks	Function
ClearOnLookup	Property
Close	Function
ClosingDate	Function
ClosingDates	Property
Clustered	Property
Code	Data type
CodeCoverageLog	Function
Codeunit	Data type
CommandLine	Function
Commit	Function
CompanyName	Function
CompressArray	Function
Compressed	Property
Confirm	Function
Consistent	Function
ContainerType	Property
ContextURL	Function
ControlAddin	Property
ControlType	Property
ConvertStr	Function
Copy	Function
CopyArray	Function
CopyFilter	Function
CopyFilters	Function
CopyLinks	Function
CopyStr	Function
CopyStream	Function
Count	Function
CountApprox	Function
Create	Function
CreateDateTime	Function
CreateGUID	Function
CreateInstream	Function
CreateOutstream	Function
CreateTempFile	Function
CreateTotals	Function
CurrentDateTime	Function
CurrentKey	Function
CurrentKeyIndex	Function
CurrentTransactionType	Function
CurrFieldNo	System Variable
CurrForm	System Variable
CurrReport	System Variable
DataCaptionExpr	Property
DataCaptionFields	Property
DataItemIndent	Property
DataItemLink	Property
DataItemLinkReference	Property
DataItemSeparator	Property
DataItemTable	Property
DataItemTableView	Property
DataItemVarName	Property
DataLength	Property
DataPerCompany	Property
Dataport	Data type
Date	Data type
Date2DMY	Function
Date2DWY	Function
DateFormula	Data type, Property
DateTime	Data type
DaTi2Variant	Function
Decimal	Data type
DecimalPlaces	Property
DecimalPlacesMax	Function
DecimalPlacesMin	Function
Default	Property
DefaultFieldsValidation	Property
DelayedInsert	Property
DelChr	Function
Delete	Function
DeleteAll	Function
DeleteAllowed	Property
DeleteLink	Function
DeleteLinks	Function
DelStr	Function
Description	Property
DeviceFontName	Property
Dialog	Data type
Dimensions	Property
Direction	Property
Div	Operator
Divisor	Property
DMY2Date	Function
Do	Keyword
Download	Function
DownloadFromStream	Function
DownTo	Keyword
DrillDown	Property
DrillDownFormID	Property
DropDown	Property
DT2Date	Function
DT2Time	Function
Duplicate	Function
Duration	Data type
DWY2Date	Function
Editable	Function, Property
Ellipsis	Property
Else	Keyword
Enabled	Function, Property
EnabledIfError	Property
EnabledIfInsertion	Property
EnabledIfSelection	Property
Encoding	Property
End	Keyword
Environ	Function
EOS	Function
Erase	Function
Error	Function
Evaluate	Function
Exists	Function
Exit	Keyword
Export	Function
ExportObjects	Function
ExtendedDataType	Property
Field	Function
Field No.	Property
FieldActive	Function
FieldCaption	Function
FieldClass	Property
FieldCount	Function
FieldEndDelimiter	Property
FieldError	Function
FieldExist	Function
FieldIndex	Function
FieldName	Function
FieldNo	Function
FieldRef	Data type
FieldSeparator	Property
FieldStartDelimiter	Property
FieldValidate	Property
File	Data type
FileFormat	Property
FileName	Function, Property
FilterGroup	Function
Find	Function
FindFirst	Function
FindLast	Function
FindSet	Function
Focusable	Property
FocusOnClick	Property
FontBold	Property
FontItalic	Property
FontName	Property
FontSize	Property
FontStrikethru	Property
FontUnderline	Property
For	Keyword
ForeColor	Property
Form	Data type
Format	Function, Property
FreezeColumnID	Property
FunctionType	Property
Get	Function
GetFilter	Function
GetFilters	Function
GetLastErrorText	Function
GetPosition	Function
GetRangeMax	Function
GetRangeMin	Function
GetRecord	Function
GetStamp	Function
GetSubtext	Function
GetTable	Function
GetView	Function
GlobalLanguage	Function
GroupTotalFields	Property
GroupType	Property
GUIAllowed	Function
GUID	Data type
HandlerFunctions	Property
HasFilter	Function
HasLinks	Function
HasValue	Function
HeadingHeight	Property
Height	Function, Property
HideValue	Property
HorzAlign	Property
HorzGlue	Property
HorzGrid	Property
Hyperlink	Function
ID	Property
If	Keyword
Image	Property
Import	Function, Property
Importance	Property
ImportObjects	Function
In	Operator
IncludeInDataSet	Property
InColumn	Property
InColumnHeading	Property
IncStr	Function
Indent	Property
Indentation	Property
IndentationColumnName	Property
IndentationControls	Property
InFooterBar	Property
InFrame	Property
Init	Function
InitValue	Property
InlineEditing	Function, Property
InMatrix	Property
InMatrixHeading	Property
InPage	Property
Input	Function
Insert	Function
InsertAllowed	Property
InsStr	Function
InStream	Data type
InstructionalTextML	Property
Integer	Data type
InvalidActionAppearance	Property
IsAction	Function
IsAutomation	Function
IsBinary	Function
IsBoolean	Function
IsChar	Function
IsClear	Function
IsCode	Function
IsCodeunit	Function
IsDate	Function
IsDateFormula	Function
IsDecimal	Function
IsEmpty	Function
IsFile	Function
IsInstream	Function
IsInteger	Function
IsNullGUID	Function
IsOption	Function
IsOutstream	Function
IsRecord	Function
IsText	Function
IsTime	Function
IsTransactionType	Function
KeepWithNext	Property
Key	Property
KeyCount	Function
KeyGroupDisable	Function
KeyGroupEnable	Function
KeyGroupEnabled	Function
KeyGroups	Property
KeyIndex	Function
KeyRef	Data type
Language	Function
LeaderDots	Property
LeftMargin	Property
Len	Function
Length	Function
LinkedInTransaction	Property
LinkedObject	Property
LinkFields	Property
LinksAllowed	Property
LinkTable	Property
LinkTableForceInsert	Property
LockTable	Function
LockTimeout	Function
LogHeight	Function, Property
LogWidth	Function, Property
Lookup	Property
LookupFormID	Property
LookupMode	Function, Property
Lowercase	Function
MaintainSIFTIndex	Property
MaintainSQLIndex	Property
Mark	Function
MarkedOnly	Function
MatrixColumnWidth	Property
MatrixSourceTable	Property
Maximizable	Property
MaximizedOnOpen	Function, Property
MaxIteration	Property
MaxLength	Property
MaxOccurs	Property
MaxStrLen	Function
MaxValue	Property
MenuItemType	Property
MenuLevel	Property
Message	Function
Minimizable	Property
MinimizedOnOpen	Function, Property
MinOccurs	Property
MinValue	Property
Mod	Operator
Modify	Function
ModifyAll	Function
ModifyAllowed	Property
MultiLine	Property
MultipleNewLines	Property
Name	Function, Property
NewPage	Function
NewPagePerGroup	Property
NewPagePerRecord	Function, Property
Next	Function
NextControl	Property
NodeName	Property
NodeType	Property
NormalDate	Function
Not	Operator
NotBlank	Property
Number	Function
Numeric	Property
ObjectID	Function
Occurrence	Property
OCX	Data type
Of	Keyword
OnAction	Trigger
OnActivate	Trigger
OnActivateForm	Trigger
OnAfterAssignField	Trigger
OnAfterAssignVariable	Trigger
OnAfterExportRecord	Trigger
OnAfterFormatField	Trigger
OnAfterGetField	Trigger
OnAfterGetRecord	Trigger
OnAfterImportRecord	Trigger
OnAfterInitRecord	Trigger
OnAfterInput	Trigger
OnAfterInsertRecord	Trigger
OnAfterTestRun	Trigger
OnAfterValidate	Trigger
OnAssistEdit	Trigger
OnBeforeEvaluateField	Trigger
OnBeforeExportRecord	Trigger
OnBeforeImportRecord	Trigger
OnBeforeInput	Trigger
OnBeforeInsertRecord	Trigger
OnBeforePassField	Trigger
OnBeforePassVariable	Trigger
OnBeforePutRecord	Trigger
OnBeforeTestRun	Trigger
OnCloseForm	Trigger
OnControlAddin	Trigger
OnCreateHyperlink	Trigger
OnDeactivate	Trigger
OnDeactivateForm	Trigger
OnDelete	Trigger
OnDeleteRecord	Trigger
OnDrillDown	Trigger
OnFindRecord	Trigger
OnFormat	Trigger
OnHyperlink	Trigger
OnInit	Trigger
OnInitDataPort	Trigger
OnInitReport	Trigger
OnInitXMLport	Trigger
OnInputChange	Trigger
OnInsert	Trigger
OnInsertRecord	Trigger
OnLookup	Trigger
OnModify	Trigger
OnModifyRecord	Trigger
OnNewRecord	Trigger
OnNextRecord	Trigger
OnOpenForm	Trigger
OnPostDataItem	Trigger
OnPostDataport	Trigger
OnPostReport	Trigger
OnPostSection	Trigger
OnPostXMLport	Trigger
OnPreDataItem	Trigger
OnPreDataport	Trigger
OnPreReport	Trigger
OnPreSection	Trigger
OnPreXMLItem	Trigger
OnPreXMLport	Trigger
OnPush	Trigger
OnQueryCloseForm	Trigger
OnQueryClosePage	Trigger
OnRename	Trigger
OnTimer	Trigger
OnValidate	Trigger
Open	Function
Option	Data type
OptionCaption	Function, Property
OptionCaptionML	Property
OptionString	Function, Property
OptionValue	Property
Or	Operator
Orientation	Property
OSVersion	Function
OutStream	Data type
PadChar	Property
PadStr	Function
Page	Data type
PageNames	Property
PageNamesML	Property
PageNo	Function
PagePartID	Property
PageType	Property
PaperSize	Property
PaperSource	Function
PaperSourceFirstPage	Property
PaperSourceOtherPages	Property
ParentControl	Property
PartType	Property
PasswordText	Property
PasteIsValid	Property
Percentage	Property
PermanentAssist	Property
Permissions	Property
PlaceInBottom	Property
PopulateAllFields	Property
Pos	Function
Power	Function
Preview	Function
PrintOnEveryPage	Property
PrintOnlyIfDetail	Function, Property
ProcessingOnly	Property
Promoted	Property
PromotedCategory	Property
PromotedIsBig	Property
ProviderID	Property
PushAction	Property
QueryReplace	Function
Quit	Function
Random	Function
Randomize	Function
Read	Function
ReadConsistency	Function
ReadPermission	Function
ReadText	Function
Rec	System Variable
Record	Data type
RecordID	Data type
RecordLevelLocking	Function
RecordRef	Data type
RecordSeparator	Property
Relation	Function
Rename	Function
Repeat	Keyword
Report	Data type
ReqFilterFields	Property
ReqFilterHeading	Property
ReqFilterHeadingML	Property
RequestOptionsForm	System Variable
Reset	Function
RightMargin	Property
Round	Function
RoundDateTime	Function
RowHeight	Property
Run	Function
RunCommand	Property
RunFormLink	Property
RunFormLinkType	Property
RunFormOnRec	Property
RunFormView	Property
RunModal	Function
RunObject	Property
SaveAsExcel	Function
SaveAsHTML	Function
SaveAsPDF	Function
SaveAsXML	Function
SaveColumnWidths	Property
SaveControlInfo	Property
SavePosAndSize	Property
SaveRecord	Function
SaveTableView	Property
SaveValues	Property
SectionHeight	Property
SectionWidth	Property
Seek	Function
SelectLatestVersion	Function
SelectStr	Function
SerialNumber	Function
SetCurrentKey	Function
SetFilter	Function
SetPermissionFilter	Function
SetPosition	Function
SetRange	Function
SetRecFilter	Function
SetRecord	Function
SetSelectionFilter	Function
SetStamp	Function
SetTable	Function
SetTableView	Function
SetView	Function
ShapeStyle	Property
Shell	Function
ShortCutKey	Property
ShowAsTree	Property
ShowCaption	Property
ShowOutput	Function
ShowPrintStatus	Property
ShowStatus	Property
SID	Function
SignDisplacement	Property
SingleInstance	Property
Sizable	Property
Skip	Function
Sleep	Function
SourceExpr	Property
SourceField	Property
SourceTable	Property
SourceTablePlacement	Property
SourceTableRecord	Property
SourceTableTemporary	Property
SourceTableView	Property
SourceType	Property
SQL Data Type	Property
SQLIndex	Property
StartPos	Property
StrCheckSum	Function
StrLen	Function
StrMenu	Function
StrPos	Function
StrSubstNo	Function
Style	Property
StyleExpr	Property
SubFormID	Property
SubFormLink	Property
SubFormView	Property
SubType	Property
SumIndexFields	Property
SynchronizeAllLogins	Function
SynchronizeSingleLogin	Function
System	Data type
SystemPartID	Property
TableBoxID	Property
TableCaption	Function
TableFilter	Data type
TableIDExpr	Property
TableName	Function
TableNo	Function, Property
TableRelation	Property
Temporary	Property
TemporaryPath	Function
TestField	Function
TestTableRelation	Property
Text	Data type
TextMode	Function
TextPos	Function
TextType	Property
Then	Keyword
Time	Data type
TimerInterval	Property
Title	Property
To	Keyword
Today	Function
ToolTip	Property
ToolTipML	Property
TopLineOnly	Property
TopMargin	Property
TotalFields	Property
TotalsCausedBy	Function
TransactionType	Data type, Property
TransferFields	Function
Trunc	Function
Type	Function
Until	Keyword
Update	Function
UpdateControls	Function
UpdateEditable	Function
UpdateFontBold	Function
UpdateForeColor	Function
UpdateIndent	Function
UpdateOnAction	Property
UpdateOnActivate	Property
UpdateSelected	Function
Upload	Function
UploadIntoStream	Function
Uppercase	Function
URL	Function
UseReqForm	Property
UseRequestForm	Function
UserID	Function
UseSystemPrinter	Property
Validate	Function
ValidateTableRelation	Property
Value	Function
ValuesAllowed	Property
VariableActive	Function
VariableName	Property
Variant	Data type
Variant2Date	Function
Variant2Time	Function
VertAlign	Property
VertGlue	Property
VertGrid	Property
Visible	Function, Property
While	Keyword
Width	Function, Property
WindowsLanguage	Function
With	Keyword
WithEvents	Property
WordDate	Function
Write	Function
WriteMode	Function
WritePermission	Function
WriteText	Function
XMLport	Data type
XMLVersionNo	Property
XOR	Operator
XPos	Function, Property
xRec	System variable
Yield	Function
YPos	Function, Property

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