How do I restore a deleted vendor?

1. Go to the Expenses menu and select Vendors. 
2. Click the Small gear icon, found to the right hand of the page. 
3. Under the Other section, select Include inactive.
4. Click Make active to activate your vendor. 

Welcome to the Community, @amy-homesfirst-o.

Let me chime in and provide information for you to restore your deleted vendor in QuickBooks Online (QBO).

As what @Just_me said, to restore your customer or vendor you'll have to :

1. Go to Expenses, then Vendors, or go to Sales, then Customers.
2. Select the Settings from inside Vendor/Customer screen, and select Include inactive to show all inactive list items.
3. After that, Select the checkbox by the customer/vendor name
4. Then Under the Action column, select Make active.

Additionally, If ever you want to restore your deleted product or service items, here's how:

1. Select Settings ⚙, then Products & services.
2. Select the Filter icon.
3. From the Status dropdown menu, select Inactive, then Apply.
4. Locate the product or service you want to make active.
5. Select Make active.

For more detailed information, refer to this article: Edit, delete, and restore list elements in QuickBooks Online.

I'll also add this article to guide you on how to enter a prior balance for a customer that owes you money or a vendor you need to pay: Manage outstanding balances for customers and vendors in QBO.

I'll always be here, ready to back you up if you have any further questions about restoring a deleted vendor or other QBO-related concerns. Please let us know any time in the thread. Keep safe!

Hi Clark,

I met the same issue. However, in the audit log, the bill was never related to the inactive vendor. I don't know why I need to restore the vendor. 

To change the bill ASAP, I tried to restore the inactive vendor. I followed your steps and didn't find the inactive vendor. 

I'll ensure to route you to the appropriate support regarding the investigation related to creating a bill, Keyla. 

As per checking, we have an ongoing investigation related to creating a bill with an error saying "Vendor assigned to this transaction has been deleted. Before you can modify this transaction, you must restore the Vendor name (deleted)." Thus, I recommend contacting our Customer Support team. So you'll be added to the lists of affected users and will receive timely updates once it's resolved.

Here's how:

1. Sign in to your QuickBooks Online company.
2. Select Help (?).
3. Select Contact Us and choose a way to connect with us:

• Start a chat with a support expert.
• Get a callback from the next available expert.

You can contact us from Mondays to Fridays, 6 AM to 6 PM PT, and Saturdays, 6 AM to 3 PM PT for Plus, Essentials, and Simple Start users. Advanced users can contact us anytime and any day.

Once everything's fine, you might want to check this article and learn how to easily edit, delete, or restore recently deleted list elements such as accounts, terms, classes, products, or services: Edit, delete, and restore list elements in QuickBooks Online.

If I can be of any additional assistance, please don't hesitate to insert a comment below. Have a great day ahead.