Only supported in Sandbox. In production this endpoint returns a 404.

Reverts every published employee tax statement for the company for the current tax season year back to draft, so you can test publishing flows again without creating a new company. Physical mail is not sent. The response body is empty on success.

The company must have at least one published employee tax statement for the current tax season year. Employer copy documents for that year are removed as part of unpublishing when they were created from published statements.