Lambda / Client / list_provisioned_concurrency_configs



Retrieves a list of provisioned concurrency configurations for a function.

See also: AWS API Documentation

Request Syntax

response = client.list_provisioned_concurrency_configs(
  • FunctionName (string) –


    The name or ARN of the Lambda function.

    Name formats

    • Function namemy-function.

    • Function ARNarn:aws:lambda:us-west-2:123456789012:function:my-function.

    • Partial ARN123456789012:function:my-function.

    The length constraint applies only to the full ARN. If you specify only the function name, it is limited to 64 characters in length.

  • Marker (string) – Specify the pagination token that’s returned by a previous request to retrieve the next page of results.

  • MaxItems (integer) – Specify a number to limit the number of configurations returned.

Return type:



Response Syntax

    'ProvisionedConcurrencyConfigs': [
            'FunctionArn': 'string',
            'RequestedProvisionedConcurrentExecutions': 123,
            'AvailableProvisionedConcurrentExecutions': 123,
            'AllocatedProvisionedConcurrentExecutions': 123,
            'Status': 'IN_PROGRESS'|'READY'|'FAILED',
            'StatusReason': 'string',
            'LastModified': 'string'
    'NextMarker': 'string'

Response Structure

  • (dict) –

    • ProvisionedConcurrencyConfigs (list) –

      A list of provisioned concurrency configurations.

      • (dict) –

        Details about the provisioned concurrency configuration for a function alias or version.

        • FunctionArn (string) –

          The Amazon Resource Name (ARN) of the alias or version.

        • RequestedProvisionedConcurrentExecutions (integer) –

          The amount of provisioned concurrency requested.

        • AvailableProvisionedConcurrentExecutions (integer) –

          The amount of provisioned concurrency available.

        • AllocatedProvisionedConcurrentExecutions (integer) –

          The amount of provisioned concurrency allocated. When a weighted alias is used during linear and canary deployments, this value fluctuates depending on the amount of concurrency that is provisioned for the function versions.

        • Status (string) –

          The status of the allocation process.

        • StatusReason (string) –

          For failed allocations, the reason that provisioned concurrency could not be allocated.

        • LastModified (string) –

          The date and time that a user last updated the configuration, in ISO 8601 format.

    • NextMarker (string) –

      The pagination token that’s included if more results are available.


  • Lambda.Client.exceptions.InvalidParameterValueException

  • Lambda.Client.exceptions.ResourceNotFoundException

  • Lambda.Client.exceptions.TooManyRequestsException

  • Lambda.Client.exceptions.ServiceException


The following example returns a list of provisioned concurrency configurations for a function named my-function.

response = client.list_provisioned_concurrency_configs(


Expected Output:

    'ProvisionedConcurrencyConfigs': [
            'AllocatedProvisionedConcurrentExecutions': 100,
            'AvailableProvisionedConcurrentExecutions': 100,
            'FunctionArn': 'arn:aws:lambda:us-east-2:123456789012:function:my-function:GREEN',
            'LastModified': '2019-12-31T20:29:00+0000',
            'RequestedProvisionedConcurrentExecutions': 100,
            'Status': 'READY',
            'AllocatedProvisionedConcurrentExecutions': 100,
            'AvailableProvisionedConcurrentExecutions': 100,
            'FunctionArn': 'arn:aws:lambda:us-east-2:123456789012:function:my-function:BLUE',
            'LastModified': '2019-12-31T20:28:49+0000',
            'RequestedProvisionedConcurrentExecutions': 100,
            'Status': 'READY',
    'ResponseMetadata': {
        '...': '...',