Retrieve the last error message received from the Cluster Manager associated with this batch. The related error code can be queried through the BatchErrorCode attribute.
Note that all Batch attributes are cached locally, and are only updated when you create a client-side batch object or when you explicitly update this cache (by calling the appropriate update function - GRBupdatebatch for C, update for Python, etc.).
For examples of how to query or modify attributes, refer to our Attribute Examples.