Use EnableBaseline with an AWS SDK

    /// <summary>
    /// Enable a baseline for the specified target.
    /// </summary>
    /// <param name="targetIdentifier">The ARN of the target.</param>
    /// <param name="baselineIdentifier">The identifier of baseline to enable.</param>
    /// <param name="baselineVersion">The version of baseline to enable.</param>
    /// <param name="identityCenterBaseline">The identifier of identity center baseline if it is enabled.</param>
    /// <returns>The enabled baseline ARN or null if already enabled.</returns>
    public async Task<string?> EnableBaselineAsync(string targetIdentifier, string baselineIdentifier, string baselineVersion, string identityCenterBaseline)
    {
        try
        {
            var parameters = new List<EnabledBaselineParameter>
            {
                new EnabledBaselineParameter
                {
                    Key = "IdentityCenterEnabledBaselineArn",
                    Value = identityCenterBaseline
                }
            };

            var request = new EnableBaselineRequest
            {
                BaselineIdentifier = baselineIdentifier,
                BaselineVersion = baselineVersion,
                TargetIdentifier = targetIdentifier,
                Parameters = parameters
            };

            var response = await _controlTowerService.EnableBaselineAsync(request);
            var operationId = response.OperationIdentifier;

            // Wait for operation to complete
            while (true)
            {
                var status = await GetBaselineOperationAsync(operationId);
                Console.WriteLine($"Baseline operation status: {status}");
                if (status == BaselineOperationStatus.SUCCEEDED || status == BaselineOperationStatus.FAILED)
                {
                    break;
                }
                await Task.Delay(30000); // Wait 30 seconds
            }

            return response.Arn;
        }
        catch (ValidationException ex) when (ex.Message.Contains("already enabled"))
        {
            Console.WriteLine("Baseline is already enabled for this target");
            return null;
        }
        catch (AmazonControlTowerException ex)
        {
            Console.WriteLine($"Couldn't enable baseline. Here's why: {ex.ErrorCode}: {ex.Message}");
            throw;
        }
    }

class ControlTowerWrapper:
    """Encapsulates AWS Control Tower and Control Catalog functionality."""

    def __init__(
        self, controltower_client: boto3.client, controlcatalog_client: boto3.client
    ):
        """
        :param controltower_client: A Boto3 Amazon ControlTower client.
        :param controlcatalog_client: A Boto3 Amazon ControlCatalog client.
        """
        self.controltower_client = controltower_client
        self.controlcatalog_client = controlcatalog_client

    @classmethod
    def from_client(cls):
        controltower_client = boto3.client("controltower")
        controlcatalog_client = boto3.client("controlcatalog")
        return cls(controltower_client, controlcatalog_client)


    def enable_baseline(
        self,
        target_identifier: str,
        identity_center_baseline: str,
        baseline_identifier: str,
        baseline_version: str,
    ):
        """
        Enables a baseline for the specified target if it's not already enabled.

        :param target_identifier: The ARN of the target.
        :param baseline_identifier: The identifier of baseline to enable.
        :param identity_center_baseline: The identifier of identity center baseline if it is enabled.
        :param baseline_version: The version of baseline to enable.
        :return: The enabled baseline ARN or None if already enabled.
        :raises ClientError: If enabling the baseline fails for reasons other than it being already enabled.
        """
        try:
            response = self.controltower_client.enable_baseline(
                baselineIdentifier=baseline_identifier,
                baselineVersion=baseline_version,
                targetIdentifier=target_identifier,
                parameters=[
                    {
                        "key": "IdentityCenterEnabledBaselineArn",
                        "value": identity_center_baseline,
                    }
                ],
            )

            operation_id = response["operationIdentifier"]
            while True:
                status = self.get_baseline_operation(operation_id)
                print(f"Baseline operation status: {status}")
                if status in ["SUCCEEDED", "FAILED"]:
                    break
                time.sleep(30)

            return response["arn"]
        except ClientError as err:
            if err.response["Error"]["Code"] == "ValidationException":
                if "already enabled" in err.response["Error"]["Message"]:
                    print("Baseline is already enabled for this target")
                    return None
                else:
                    print(
                        "Unable to enable baseline due to validation exception: %s: %s",
                        err.response["Error"]["Code"],
                        err.response["Error"]["Message"],
                    )
            logger.error(
                "Couldn't enable baseline. Here's why: %s: %s",
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise