# DiagnosticKind ```csharp public enum DiagnosticKind ``` Namespace `SharpCell` · package `SharpCell` What a [CalculationDiagnostic](SharpCell.CalculationDiagnostic.md) reports. ## Values | Name | Value | Description | |---|---|---| | `CircularReference` | 0 | Cells reference each other in a loop; every cell in the loop got 0. | | `FunctionFailure` | 1 | A function failed unexpectedly; the cell got `#VALUE!`. | | `UnsupportedFormula` | 2 | A formula uses something SharpCell cannot evaluate, such as a function it does not know or (in a file) a link to another workbook; the cell got `#NAME?`. | | `LimitExceeded` | 3 | A result was larger than a limit allows, such as the cells all spills of a workbook may cover together; the cell got an error. | | `CustomFunctionFailure` | 4 | A function added through [Workbook.Functions](SharpCell.Workbook.md#functions) threw an exception; the cell got `#VALUE!`. The message names the function and the exception. | | `IterationLimitReached` | 5 | With [Workbook.Iteration](SharpCell.Workbook.md#iteration) enabled, a circular reference did not settle within [IterationSettings.MaxIterations](SharpCell.IterationSettings.md#maxiterations) passes; its cells keep their last values. |