If the backup operation fails, check the possible causes of failure listed here and the corresponding solutions.
Scenario one
Specified queen instance id is invalid, either not existing or its not a queen node.
Solution: Specify the correct queen instance id, and then retry.
Scenario two
Specified bucket name does not exist and its creation failed.
Solutions: Get the right permission, or ask AWS root user to create the bucket, and then retry.
Scenario three
Building backup object failed.
This is very unlikely to happen. The possible cause is lack of resources in AWS, for example, memory.
Solution: Manual intervention is required to free up resources, and then retry.
You need to determine if any snapshots were created till the time of failure.