# OrleansMissingMembershipEntryException

Package: [Microsoft.Orleans.Runtime](/orleans/docs/api/csharp/microsoft.orleans.runtime/) 10.0.0

[NuGet package](https://www.nuget.org/packages/Microsoft.Orleans.Runtime) | [Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Runtime/MembershipService/OrleansMissingMembershipEntryException.cs#L12)

```csharp
[Orleans.GenerateSerializer]
public sealed class OrleansMissingMembershipEntryException : OrleansException
```

Exception used to indicate that a cluster membership entry which was expected to be present.

## See also

- [OrleansException](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.orleansexception/)

## Constructors

- [OrleansMissingMembershipEntryException](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.membershipservice.orleansmissingmembershipentryexception/constructors/constructor-7c81f0d7/)
- [OrleansMissingMembershipEntryException(string)](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.membershipservice.orleansmissingmembershipentryexception/constructors/constructor-string-35169c75/)
- [OrleansMissingMembershipEntryException(string, Exception)](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.membershipservice.orleansmissingmembershipentryexception/constructors/constructor-string-system-exception-d1bc622f/)