# TraconLoopUnsatisfiedException > Tracon documentation. Tracon is a .NET package family that adds a control > plane on Microsoft Agent Framework, published as NuGet packages that run > inside your own ASP.NET Core application. > > Page: https://tracon.dev/api/tracon.traconloopunsatisfiedexception/ > Summary: TraconLoopUnsatisfiedException: Thrown when a harness loop reaches its iteration ceiling while a criterion still asks for another iteration, and its LoopSettings.OnExhausted is LoopOutcome.FailRun.
Namespace Tracon · Assembly Tracon.Abstractions.dll
Thrown when a harness loop reaches its iteration ceiling while a criterion still asks for another iteration, and its [LoopSettings.OnExhausted](/api/tracon.loopsettings/#Tracon_LoopSettings_OnExhausted) is [LoopOutcome.FailRun](/api/tracon.loopoutcome/). ```csharp public sealed class TraconLoopUnsatisfiedException : TraconException, ISerializable ```
Inheritance
object ← Exception ← TraconException ← TraconLoopUnsatisfiedException
Implements
ISerializable
Inherited Members
TraconException.ErrorType, Exception.GetBaseException(), Exception.ToString(), Exception.GetType(), Exception.TargetSite, Exception.Message, Exception.Data, Exception.InnerException, Exception.HelpLink, Exception.Source, Exception.HResult, Exception.StackTrace, object.GetType(), object.ToString(), object.Equals(object?), object.Equals(object?, object?), object.ReferenceEquals(object?, object?), object.GetHashCode()
## Remarks The run fails with error type `loop_unsatisfied`, classified as [RunErrorClass.LoopUnsatisfied](/api/tracon.runerrorclass/). A workflow that runs the agent stops at that node: the response no criterion accepted does not reach the next one. The message names the agent, the number of iterations and the kind of the criterion that was not satisfied. It never carries the model's response or the criterion's feedback: both are free-form text written for the model, and the error is stored with the run and shown to clients. ## Constructors ### TraconLoopUnsatisfiedException\(\) Creates a new error. ```csharp public TraconLoopUnsatisfiedException() ``` ### TraconLoopUnsatisfiedException\(string\) Creates a new error. ```csharp public TraconLoopUnsatisfiedException(string message) ``` #### Parameters `message` [string](https://learn.microsoft.com/dotnet/api/system.string) The error message. Must not carry the response or the feedback text. ### TraconLoopUnsatisfiedException\(string, Exception\) Creates a new error. ```csharp public TraconLoopUnsatisfiedException(string message, Exception innerException) ``` #### Parameters `message` [string](https://learn.microsoft.com/dotnet/api/system.string) The error message. Must not carry the response or the feedback text. `innerException` [Exception](https://learn.microsoft.com/dotnet/api/system.exception) The underlying error. ## Fields ### LoopUnsatisfiedErrorType The stable value written to [TraconException.ErrorType](/api/tracon.traconexception/#Tracon_TraconException_ErrorType). ```csharp public const string LoopUnsatisfiedErrorType = "loop_unsatisfied" ``` #### Field Value [string](https://learn.microsoft.com/dotnet/api/system.string) ## Properties ### AgentName Gets the name of the agent whose loop was not satisfied. ```csharp public string? AgentName { get; init; } ``` #### Property Value [string](https://learn.microsoft.com/dotnet/api/system.string)? ### ErrorType Gets the stable error type name written to the run record. ```csharp public override string ErrorType { get; } ``` #### Property Value [string](https://learn.microsoft.com/dotnet/api/system.string) #### Remarks Defaults to the full name of the exception type, so today's behaviour does not change. A derived type overrides this member when the record has to be machine readable — for example [TraconContentFilteredException](/api/tracon.traconcontentfilteredexception/) writes `content_filtered`. Reports and alert rules can rely on this stable name instead of an assembly name. The value is written to `RunError.Type` and **carries no secret**. ### Iterations Gets the number of iterations the loop ran. ```csharp public int Iterations { get; init; } ``` #### Property Value [int](https://learn.microsoft.com/dotnet/api/system.int32) ### UnsatisfiedCriterion Gets the kind of the criterion that still asked for another iteration. ```csharp public string? UnsatisfiedCriterion { get; init; } ``` #### Property Value [string](https://learn.microsoft.com/dotnet/api/system.string)?