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Asynchronous commands were introduced in &PRODUCT; 2.x. Commands are designated as asynchronous when they can potentially take a long period of time to complete such as creating a snapshot or disk volume. They differ from synchronous commands by the following: They are identified in the API Reference by an (A). They will immediately return a job ID to refer to the job that will be responsible in processing the command. If executed as a "create" resource command, it will return the resource ID as well as the job ID. You can periodically check the status of the job by making a simple API call to the command, queryAsyncJobResult and passing in the job ID.