When I use the search function to try an find a specific invoice number, it says there is no such number How do I fix this?

Thanks for posting in the Community, sales238!

Let's check your invoice details by running an Invoice List report in your QuickBooks Online account. Here's how to:

1. Click on the Reports tab.
2. On the search box type in Invoice List.
3. Select a Report period or date range.
4. Click on the Customise button to add Rows/Columns and Filters.
5. Click on Run report.

Under NO. column check if the invoice number is showing on the list. If the invoice number is not showing, it could be the invoice was not created in QuickBooks Online. I would recommend checking your Audit Log report as well to see the activities and changes made in the account.

Here's how to view your Audit Log report:

1. Go to Settings ⚙ and select Audit log.
2. Use the fields on the page to choose the appropriate User, Date, or Events filter to narrow the results.

You can check this link to learn more about Audit logs in QuickBooks Online: Use the audit log in QuickBooks Online.

Keep me posted if you have other invoicing concerns. I'll get back to help you the best that I can.

Thank you for the input, tried everything you suggested. Didn't work. The invoices appear in report, there has been no alterations within the audit log but when I try and search for the invoice it still says "We didn't find "140199" in your transactions, contacts and reports" 

Thanks for getting back to us, sales238.

In the meantime let's use the report to view the invoice or go to Sales tab and click on All Sales to view and edit the invoice. Here's how to:

1. Click on the Sales tab.
2. Click on All Sales or Invoices tab.
3. From here you can filter the transaction Type and click on the invoice.
4. Click on Edit to view the details.

If you need more help with the specific invoice number, I would recommend contacting our Customer Care Support. That way, one of our care agents can check your account in a secure form. Here's how to contact support:

1. Click Help on the top menu.
2. Select Contact us. 
3. Provide a brief description of your concern in the What can we help you with? section.
4. Click Let's talk.
5. Choose a way to connect with us through Start a chat or Get a callback.

Please let me know if you have any additional questions. I'm always willing to assist.