Which of the following is a limitation of SuiteTalk?

The correct answer highlights that SuiteTalk's limitation involves its inability to be bundled. SuiteTalk, which is NetSuite's web services platform for integration, does not allow the functionality to be included within SuiteBundles. This means that while you can create SuiteTalk integrations, you cannot package them into a bundle for easier deployment or sharing across accounts in NetSuite. This restricts the scalability and manageability of SuiteTalk integrations, particularly for organizations that frequently create and share customizations or integrations.

The other options describe aspects that do not accurately reflect the limitations of SuiteTalk. SuiteTalk supports various data formats beyond just XML, including JSON, which allows for more flexible integration solutions. Additionally, SuiteTalk supports multiple methods for exporting data, including XML and JSON, rather than being limited to CSV-only exports. Lastly, SuiteTalk does have provisions for authentication, using token-based or OAuth authentication mechanisms to secure API access, ensuring that integrations can be both robust and secure.