---
title: JSONReadingError.unsupportedStructure
framework: Tabular Data
role: symbol
role_heading: Case
platforms: [iOS 15.0+, iPadOS 15.0+, Mac Catalyst 15.0+, macOS 12.0+, tvOS 15.0+, visionOS 1.0+, watchOS 8.0+]
path: tabulardata/jsonreadingerror/unsupportedstructure
---

# JSONReadingError.unsupportedStructure

An error that occurs when the JSON structure is incompatible with a data frame.

## Declaration

```swift
case unsupportedStructure
```

## See Also

### Getting Error Information

- [JSONReadingError.failedToParse(row:column:type:contents:)](tabulardata/jsonreadingerror/failedtoparse(row:column:type:contents:).md)
- [JSONReadingError.incompatibleValues(column:)](tabulardata/jsonreadingerror/incompatiblevalues(column:).md)
- [JSONReadingError.wrongType(row:column:expectedType:value:)](tabulardata/jsonreadingerror/wrongtype(row:column:expectedtype:value:).md)