| Parameter | Type | Description | Example |
|---|---|---|---|
| object | The information about function concurrency configurations. | ||
| functionArn | string | The Alibaba Cloud Resource Name (ARN). | acs:fc:cn-shanghai:123:functions/demo |
| reservedConcurrency | long | The reserved concurrency of the function. Other functions cannot use the concurrency. The reserved concurrency includes the total concurrency of provisioned instances and on-demand instances. | 10 |