If Data Exists (ModelBuilder)


Evaluates whether the specified data exists.

Learn how If Data Exists works in ModelBuilder


  • This tool is only available from ModelBuilder for use in models. The tool is not available from the Geoprocessing pane or from Python.

  • The tool has two Boolean outputs, True and False. Based on the condition being evaluated, one of the two Boolean outputs is true and the other is false after the tool runs. These Boolean outputs must be set as a precondition to the downstream tools for those to run if either of the preconditions is true.

  • Note:

    The If Data Exists tool is always in a ready-to-run state (colored in) when added to a model. This is because the Input Data Element parameter is optional with an Any Value data type, and an empty value is considered a valid input and evaluated as false. This tool evaluates whether the input data is a dataset, a layer, or a file type. Input data of any other data type is evaluated as false. If the data type does not match the real data type of the input data, the False output variable will be set to true.


LabelExplanationData Type
Input Data Element

The input data element to be evaluated.

Any Value
Data Type

Specifies the data type of the data element that will be evaluated.

  • Any Data TypeAny Data Type
  • 3D Object Feature Layer3D Object Feature Layer
  • Address LocatorAddress Locator
  • Analysis Cell SizeAnalysis Cell Size
  • Annotation LayerAnnotation Layer
  • Any ValueAny Value
  • ArcMap DocumentArcMap Document
  • Areal UnitAreal Unit
  • BIM File WorkspaceBIM File Workspace
  • BooleanBoolean
  • Building Discipline LayerBuilding Discipline Layer
  • Building Scene Discipline LayerBuilding Scene Discipline Layer
  • Building LayerBuilding Layer
  • Building Scene LayerBuilding Scene Layer
  • CAD Drawing DatasetCAD Drawing Dataset
  • Calculator ExpressionCalculator Expression
  • Catalog RootCatalog Root
  • Catalog LayerCatalog Layer
  • Cell SizeCell Size
  • Cell Size XYCell Size XY
  • Composite LayerComposite Layer
  • CompressionCompression
  • Coordinate SystemCoordinate System
  • Coordinate Systems FolderCoordinate Systems Folder
  • CoverageCoverage
  • Coverage Feature ClassCoverage Feature Class
  • Data ElementData Element
  • Data FileData File
  • Database ConnectionsDatabase Connections
  • DatasetDataset
  • DateDate
  • dBASE TabledBASE Table
  • DecimateDecimate
  • Diagram LayerDiagram Layer
  • Dimension LayerDimension Layer
  • Disk ConnectionDisk Connection
  • DoubleDouble
  • Elevation Surface LayerElevation Surface Layer
  • Encrypted StringEncrypted String
  • EnvelopeEnvelope
  • Evaluation ScaleEvaluation Scale
  • ExtentExtent
  • Extract ValuesExtract Values
  • Feature ClassFeature Class
  • Feature DatasetFeature Dataset
  • Feature LayerFeature Layer
  • Feature SetFeature Set
  • FieldField
  • Field InfoField Info
  • Field MappingsField Mappings
  • FileFile
  • FolderFolder
  • Formulated RasterFormulated Raster
  • Fuzzy FunctionFuzzy Function
  • GeoDataServerGeoDataServer
  • GeodatasetGeodataset
  • Geometric NetworkGeometric Network
  • Geostatistical LayerGeostatistical Layer
  • Geostatistical Search NeighborhoodGeostatistical Search Neighborhood
  • Geostatistical Value TableGeostatistical Value Table
  • GlobeServerGlobeServer
  • GPServerGPServer
  • GraphGraph
  • Graph Data TableGraph Data Table
  • Graphics LayerGraphics Layer
  • Group LayerGroup Layer
  • Horizontal FactorHorizontal Factor
  • Image ServiceImage Service
  • IndexIndex
  • INFO ExpressionINFO Expression
  • INFO ItemINFO Item
  • INFO TableINFO Table
  • Internet Tiled LayerInternet Tiled Layer
  • KML LayerKML Layer
  • LAS DatasetLAS Dataset
  • LAS Dataset LayerLAS Dataset Layer
  • LayerLayer
  • Layer FileLayer File
  • LayoutLayout
  • LineLine
  • Linear UnitLinear Unit
  • LongLong
  • M DomainM Domain
  • MapMap
  • Map ServerMap Server
  • Map Server LayerMap Server Layer
  • Mosaic DatasetMosaic Dataset
  • Mosaic LayerMosaic Layer
  • NeighborhoodNeighborhood
  • Network Analyst Class FieldMapNetwork Analyst Class FieldMap
  • Network Analyst Hierarchy SettingsNetwork Analyst Hierarchy Settings
  • Network Analyst LayerNetwork Analyst Layer
  • Network Data SourceNetwork Data Source
  • Network DatasetNetwork Dataset
  • Network Dataset LayerNetwork Dataset Layer
  • Network Travel ModeNetwork Travel Mode
  • Oriented Imagery LayerOriented Imagery Layer
  • Parcel FabricParcel Fabric
  • Parcel Fabric for ArcMapParcel Fabric for ArcMap
  • Parcel Fabric Layer for ArcMapParcel Fabric Layer for ArcMap
  • Parcel LayerParcel Layer
  • PointPoint
  • PolygonPolygon
  • Projection FileProjection File
  • PyramidPyramid
  • RadiusRadius
  • Random Number GeneratorRandom Number Generator
  • Raster BandRaster Band
  • Raster Calculator ExpressionRaster Calculator Expression
  • Raster CatalogRaster Catalog
  • Raster Catalog LayerRaster Catalog Layer
  • Raster Data LayerRaster Data Layer
  • Raster DatasetRaster Dataset
  • Raster LayerRaster Layer
  • Raster StatisticsRaster Statistics
  • Raster TypeRaster Type
  • Record SetRecord Set
  • Relationship ClassRelationship Class
  • RemapRemap
  • ReportReport
  • Route Measure Event PropertiesRoute Measure Event Properties
  • Scene LayerScene Layer
  • SemivariogramSemivariogram
  • ServerConnectionServerConnection
  • ShapefileShapefile
  • Spatial ReferenceSpatial Reference
  • SQL ExpressionSQL Expression
  • StringString
  • String HiddenString Hidden
  • TableTable
  • Table ViewTable View
  • Terrain LayerTerrain Layer
  • Text FileText File
  • Tile SizeTile Size
  • Time ConfigurationTime Configuration
  • Time UnitTime Unit
  • TIN LayerTIN Layer
  • ToolTool
  • ToolboxToolbox
  • Topo FeaturesTopo Features
  • TopologyTopology
  • Topology LayerTopology Layer
  • Trace NetworkTrace Network
  • Trace Network LayerTrace Network Layer
  • Trajectory LayerTrajectory Layer
  • Transformation FunctionTransformation Function
  • Utility NetworkUtility Network
  • Utility Network LayerUtility Network Layer
  • VariantVariant
  • Vector Tile LayerVector Tile Layer
  • Vertical FactorVertical Factor
  • Voxel LayerVoxel Layer
  • VPF CoverageVPF Coverage
  • VPF TableVPF Table
  • WCS CoverageWCS Coverage
  • Weighted Overlay TableWeighted Overlay Table
  • Weighted SumWeighted Sum
  • WMS MapWMS Map
  • WMTS LayerWMTS Layer
  • WorkspaceWorkspace
  • XY DomainXY Domain
  • Z DomainZ Domain

Derived Output

LabelExplanationData Type

If the specified criteria evaluates to True, this parameter will be set to True.


If the specified criteria evaluates to False, this parameter will be set to True.



This tool does not use any geoprocessing environments.

Licensing information

  • Basic: Yes
  • Standard: Yes
  • Advanced: Yes

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