|**connection**|**Connection**|The name of an app setting that contains the Service Bus connection string to use for this binding. If the app setting name begins with "AzureWebJobs", you can specify only the remainder of the name. For example, if you set `connection` to "MyServiceBus", the Functions runtime looks for an app setting that is named "AzureWebJobsMyServiceBus." If you leave `connection` empty, the Functions runtime uses the default Service Bus connection string in the app setting that is named "AzureWebJobsServiceBus".<br><br>To obtain a connection string, follow the steps shown at [Get the management credentials](../service-bus-messaging/service-bus-quickstart-portal.md#get-the-connection-string). The connection string must be for a Service Bus namespace, not limited to a specific queue or topic. |
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