Thanks for joining this thread, @Lisa199.
I know how important it is for you and your business to add multiple addresses for your vendor. As mentioned by my colleagues, our Intuit engineers are aware of this feature request.
It is always our aim to develop relevant features that came from customer's feedback. As a team with a massive roadmap, we have to pick new features based on the value they’ll add to the most users possible.
For now, you can follow the workaround shared to look for a third-party app that integrates with QuickBooks Online. Though I'm unable to recommend one but our QuickBooks App Store has all kinds of third-party software that you can choose.
While we continue to make your experience with us even better, I recommend visiting our QuickBooks Blog to get the recent news, information about the latest features, and updates.
For future reference, I’m attaching some helpful article about 1099 that you can check on:
I appreciate the patience while we launch the product updates to all QuickBooks Online users. If you have additional QuickBooks questions, please let me know. Keep safe.
