Use CreatePipeline with an AWS SDK

    /// <summary>
    /// Create a pipeline from a JSON definition, or update it if the pipeline already exists.
    /// </summary>
    /// <returns>The Amazon Resource Name (ARN) of the pipeline.</returns>
    public async Task<string> SetupPipeline(string pipelineJson, string roleArn, string name, string description, string displayName)
    {
        try
        {
            var updateResponse = await _amazonSageMaker.UpdatePipelineAsync(
                new UpdatePipelineRequest()
                {
                    PipelineDefinition = pipelineJson,
                    PipelineDescription = description,
                    PipelineDisplayName = displayName,
                    PipelineName = name,
                    RoleArn = roleArn
                });
            return updateResponse.PipelineArn;
        }
        catch (Amazon.SageMaker.Model.ResourceNotFoundException)
        {
            var createResponse = await _amazonSageMaker.CreatePipelineAsync(
                new CreatePipelineRequest()
                {
                    PipelineDefinition = pipelineJson,
                    PipelineDescription = description,
                    PipelineDisplayName = displayName,
                    PipelineName = name,
                    RoleArn = roleArn
                });

            return createResponse.PipelineArn;
        }
    }

    // Create a pipeline from the example pipeline JSON.
    public static void setupPipeline(SageMakerClient sageMakerClient, String filePath, String roleArn,
            String functionArn, String pipelineName) {
        System.out.println("Setting up the pipeline.");
        JSONParser parser = new JSONParser();

        // Read JSON and get pipeline definition.
        try (FileReader reader = new FileReader(filePath)) {
            Object obj = parser.parse(reader);
            JSONObject jsonObject = (JSONObject) obj;
            JSONArray stepsArray = (JSONArray) jsonObject.get("Steps");
            for (Object stepObj : stepsArray) {
                JSONObject step = (JSONObject) stepObj;
                if (step.containsKey("FunctionArn")) {
                    step.put("FunctionArn", functionArn);
                }
            }
            System.out.println(jsonObject);

            // Create the pipeline.
            CreatePipelineRequest pipelineRequest = CreatePipelineRequest.builder()
                    .pipelineDescription("Java SDK example pipeline")
                    .roleArn(roleArn)
                    .pipelineName(pipelineName)
                    .pipelineDefinition(jsonObject.toString())
                    .build();

            sageMakerClient.createPipeline(pipelineRequest);

        } catch (IamException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        } catch (IOException | ParseException e) {
            throw new RuntimeException(e);
        }
    }

A function that creates a SageMaker AI pipeline using a locally provided JSON definition.

/**
 * Create the Amazon SageMaker pipeline using a JSON pipeline definition. The definition
 * can also be provided as an Amazon S3 object using PipelineDefinitionS3Location.
 * @param {{roleArn: string, name: string, sagemakerClient: import('@aws-sdk/client-sagemaker').SageMakerClient}} props
 */
export async function createSagemakerPipeline({
  // Assumes an AWS IAM role has been created for this pipeline.
  roleArn,
  name,
  // Assumes an AWS Lambda function has been created for this pipeline.
  functionArn,
  sagemakerClient,
}) {
  const pipelineDefinition = readFileSync(
    // dirnameFromMetaUrl is a local utility function. You can find its implementation
    // on GitHub.
    `${dirnameFromMetaUrl(
      import.meta.url,
    )}../../../../../scenarios/features/sagemaker_pipelines/resources/GeoSpatialPipeline.json`,
  )
    .toString()
    .replace(/\*FUNCTION_ARN\*/g, functionArn);

  let arn = null;

  const createPipeline = () =>
    sagemakerClient.send(
      new CreatePipelineCommand({
        PipelineName: name,
        PipelineDefinition: pipelineDefinition,
        RoleArn: roleArn,
      }),
    );

  try {
    const { PipelineArn } = await createPipeline();
    arn = PipelineArn;
  } catch (caught) {
    if (
      caught instanceof Error &&
      caught.name === "ValidationException" &&
      caught.message.includes(
        "Pipeline names must be unique within an AWS account and region",
      )
    ) {
      const { PipelineArn } = await sagemakerClient.send(
        new DescribePipelineCommand({ PipelineName: name }),
      );
      arn = PipelineArn;
    } else {
      throw caught;
    }
  }

  return {
    arn,
    cleanUp: async () => {
      await sagemakerClient.send(
        new DeletePipelineCommand({ PipelineName: name }),
      );
    },
  };
}

// Create a pipeline from the example pipeline JSON.
suspend fun setupPipeline(filePath: String?, roleArnVal: String?, functionArnVal: String?, pipelineNameVal: String?) {
    println("Setting up the pipeline.")
    val parser = JSONParser()

    // Read JSON and get pipeline definition.
    FileReader(filePath).use { reader ->
        val obj: Any = parser.parse(reader)
        val jsonObject: JSONObject = obj as JSONObject
        val stepsArray: JSONArray = jsonObject.get("Steps") as JSONArray
        for (stepObj in stepsArray) {
            val step: JSONObject = stepObj as JSONObject
            if (step.containsKey("FunctionArn")) {
                step.put("FunctionArn", functionArnVal)
            }
        }
        println(jsonObject)

        // Create the pipeline.
        val pipelineRequest = CreatePipelineRequest {
            pipelineDescription = "Kotlin SDK example pipeline"
            roleArn = roleArnVal
            pipelineName = pipelineNameVal
            pipelineDefinition = jsonObject.toString()
        }

        SageMakerClient { region = "us-west-2" }.use { sageMakerClient ->
            sageMakerClient.createPipeline(pipelineRequest)
        }
    }
}