Attribute Rule Constraint

Since version: 1.5

With the Attribute Rule Constraint profile, expressions can be written to evaluate whether or not a feature meets the criteria defined in the expression. This profile is used for constraint attribute rules in ArcGIS Pro. The script should return a Boolean with true indicating the feature meets the constraint criteria or false indicating it does not meet the criteria. You can also return a custom error message by returning a Dictionary of errorMessage.


The following products implement this profile:

Spatial reference

The spatial reference of the expression's data source1 determines the execution context's spatial reference.

Time zone

The time zone of the expression's data source1 determines the execution context's default time zone.

Profile variables

Variable NameTypeDescriptionSince version
$datastoreFeatureSetCollectionA collection of layers in the same feature service or database as the $feature executing the script.1.5
$editcontext.editTypeTextIndicates whether the edit event is INSERT, UPDATE, DELETE, or NA (not applicable).1.10
$featureFeatureThe feature being evaluated for the constraint.1.5
$originalFeatureFeatureThe previous state of the feature being evaluated.1.9
$featureSetFeatureSetA collection of features in the same table as the $feature evaluating the expression.1.13

Function bundles

Core | Geometry | Data Access

Return types

Boolean | Dictionary

For a list of valid dictionary keywords, click here.


The following expression demonstrates how to prevent a feature from being deleted unless the feature is retired.

Use dark colors for code blocksCopy
if ($feature.lifecyclestatus == 128 || $feature.lifecyclestatus == 64)
  return true;
return {'errorMessage': 'You are not allowed delete a feature until it is retired'};
  1. Data source can be a file geodatabase, mobile geodatabase, or mobile service.

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