The MPI error code associated with this communication.
TODO: We need a higher-level facility for dealing with this.
Namespace:
MPIAssembly: MPI (in MPI.dll)
Version: 1.0.0.0 (1.0.0.0)
  |
| The Message Passing Interface |
| Unsafe..::.MPI_Status..::.MPI_ERROR Field |
| Unsafe..::.MPI_Status Structure See Also Send Feedback |
