In our previous blog post , we discussed how v2009 error handling works in synchronous APIs. In this blog post, we cover asynchronous error handling in BulkMutateJobService . If you are new to BulkMutateJobService, check out our introductory blog post and code.google.com article . Due to its asynchronous nature, error handling in BulkMutateJobService is slightly different than in other services. Instead of throwing an ApiError object,