Hi there.
For assistance with your specific concern related to the Sandbox environment and whether you need to purchase a higher version of QuickBooks Online, our Developer Support Team is the best resource. They specialize in all API and Sandbox Account-related questions and can provide you with the accurate response.
Here’s how you can connect with them to get help:
1. Visit the Intuit Developer Support site here: https://help.developer.intuit.com/s/.
2. Select your QuickBooks product from the available options.
3. Click on "Ask a Question."
4. Sign in with your Intuit developer account.
5. Follow the on-screen prompts to submit your question.
Please don't hesitate if you have other questions or concerns.
