RelationshipTypeExpression Property
Gets or sets the expression which is used to generate the relationship type of this relationship.
This property takes precedence over the TypeIsFieldName and RelationshipType properties.
If the RelationshipTypeExpression is not null, the RelationshipType is generated from the script defined in the expression object.
If the RelationshipTypeExpression is null, the value of the RelationshipType property is interpreted based on the TypeIsFieldName property.
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3.3 or higher.