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# Async tab [Design Studio]

The Async tab of the Design Studio lists all the occurrences of asynchronous communication that VuGen detected in the Vuser script.

The Async tab enables you to only view the asynchronous communication that is included in the Vuser script - you cannot edit any of the asynchronous details from the Async tab. Changes to the asynchronous details must be made in the Vuser script.

The Design Studio button is enabled only when you display a recorded Vuser script in the Solution Explorer.

To access:

- Select Design > Design Studio, and then click the Async tab.
- Click the Design Studio button on the VuGen toolbar, and then click the Async tab.

User interface elements are described below:

UI Element | Description
--- | ---
Type | Indicates the origin of the asynchronous code in the Vuser script: Record. The asynchronous code was added by VuGen during an Async scan that was performed after recording or regenerating the Vuser script. Rule. The asynchronous code was added by VuGen due to a specific rule in the Async rules file. Manual. The asynchronous code was manually added by a user.
Action | The section of the Vuser script in which the asynchronous behavior is located.
Occurrences | For push-type conversations, Occurrences is always 1. For poll and long-poll conversations, Occurrences indicates the number of steps or extra resource attributes that were removed [commented-out] by VuGen during the Async scan of the Vuser script.
Status | Always has the value Applied.
Async Type | The type of the asynchronous behavior that was detected: Push, Poll, or Long-Poll.
URL | The URL in the web_reg_async_attributes step that starts the asynchronous conversation.
Filter | Select which asynchronous conversations to display in the conversation list.
Details | Expands the dialog box to show details about the selected asynchronous conversation.
Name | Always has the value web_reg_async_attributes.
Line | The line in the Vuser script that contains the web_reg_async_attributes step.
Action Name | The section of the Vuser script in which the asynchronous behavior is located.
Description | The comment in the Vuser script that precedes the web_reg_async_attributes step.
Occurrences in Snapshot | For push-type conversations, displays the response body. For poll and long-poll conversations, displays HTTP attributes associated with the asynchronous conversation.
Options | Opens the Asynchronous Request Thresholds dialog box.

## See also

- Create an asynchronous Vuser script

https://admhelp.microfocus.com VuGen,Professional Performance Engineering,Performance Engineering for Developers 8942
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