I’m using a pipeline job to fine tune a text-bison model with Vertex AI on GCP. My API is logged using a dedicated service account. It has the roles : Vertex AI Service Agent and Service Accounts User.

I’m using this Node.js code :

import aiplatform from '@google-cloud/aiplatform';

class ModelTuningController {
  initiateModelTuning = catchAsync(async (req, res) => {
    const { modelDisplayName = 'fineTunedTest' } = req.body;

    const { PipelineServiceClient } = aiplatform.v1;

    const location = 'us-central1';
    const project = 'projectID';
    const model = 'text-bison@001';

const pipelineClient = new PipelineServiceClient({
  apiEndpoint: `${location}-aiplatform.googleapis.com`,
  keyFilename: config.vector_store_key_filename,
});

const parameters = {
  source_model: { stringValue: model },
  train_dataset: {
    stringValue: 'gs://path/file.jsonl',
  },
  tuned_model_display_name: {
    stringValue: modelDisplayName,
  },
  epochs: {
    numberValue: 4,
  },
  learning_rate_multiplier: {
    numberValue: 1,
  },
};

const runtimeConfig = {
  gcsOutputDirectory: 'gs://output-path',
  parameterValues: parameters,
};

try {
  const parent = `projects/${project}/locations/${location}`;
  const pipelineJob = {
    displayName: modelDisplayName,
    runtimeConfig,
  };

  const request = {
    parent,
    pipelineJob,
  };

  const [response] = await pipelineClient.createPipelineJob(request);

  return sendResponse(res, {
    message: ModelTuningMessages.jobInitiated(response.name),
  });
} catch (err) {
  return sendError(
    err,
    new ApiError(
      httpStatus.INTERNAL_SERVER_ERROR,
      ModelTuningMessages.jobError


       )
      );
    }
  });
}

export default ModelTuningController;

I have the following error : You do not have permission to act as service_account: ${projectID}[email protected]. (or it may not exist).

The problem is ${projectID}[email protected] is the project default service account. My guess it that my service account should act as the default service account of the project.

Does my service account is missing a role to execute the fine tuning job on Vertex AI ?