allowDeferredExecution

Makes it possible to enable job queuing when your concurrent request limit is exceeded. When AllowDeferredExecution is set to true, transcription job requests are placed in a queue until the number of jobs falls below the concurrent request limit. If AllowDeferredExecution is set to false and the number of transcription job requests exceed the concurrent request limit, you get a LimitExceededException error.

If you include AllowDeferredExecution in your request, you must also include DataAccessRoleArn.