Our web app sends invoice/bill data to QBO via API. For some services, an erroneous income account was sent. A quick, universal fix, or must services be fixed one by one?

Welcome to the Community, @john-f-mcelroy.

We have a separate and dedicated forum that handles API concerns in QuickBooks Online (QBO). This team is the best resource for such inquiries as they'll be able to discuss with on the API operations in your company data.

Please visit this link so our developer support and other API users can help with your question about adding company timezone using your app: Intuit Developer Homepage. From there, select the Questions header and click the Ask a Question button.

I've got you this helpful article for updates from our developers: Developer Support Blog.

Leave me a comment below if you have any other questions. Thanks!

Thanks, Grace. We’ve added the post to the developer community forum. Many thanks for your guidance!

John