I'm glad to see you posting here in QuickBooks Community. I'll provide different information and steps about missing invoices.
If you're referring to miss creating an invoice 1242 and 1243, I'd suggest using the Custom transaction numbers feature to set your own numbering preference. This adds an Invoice no. field where you can enter and create an Invoice that allows you to use 1242 and 1243 numbers.
Here's how:
Click the Gear icon at the upper right corner and choose Account and Settings.
Select the Sales tab andselect anywhere within the Sales form content section.
Once done, open an invoice or any sales form. Then, in the Invoice no. field, enter the custom number you want to use for your forms.
However, if you mean that Invoice 1242 and 1243 are missing from your Sales page, it could be that one of the QuickBooks users deleted the entry. To verify this, I'd suggest visiting the Audit log page. From there, you'll see the list of the company's activities, the changes made, and who made them.
Here's how:
Click the Gear icon at the upper right corner.
Select Audit Log.
Select the Filter panel to filter User, Date, or Events and narrow the results.
If the issue persists, it might be your regular browser is experiencing some issues. That's why some invoices are missing. I recommend logging in to your QuickBooks account using a private browser. This is to rule out the possibility of a webpage issue, and private browsing doesn't store local files or cache.
Use these keyboard shortcuts based on the browser you're using.
For Firefox, press Ctrl + Shift + P.
For Chrome, press Ctrl + Shift + N.
For Safari, hold down Command + Shift + N.
If it works in incognito, I recommend clearing the cache of your regular browser. This removes the history or log of sites so you can start with a clean slate. You can check this article to see the steps: Clear cache and cookies to fix issues when using QuickBooks Online.
Please refer to this article to see information on how QuickBooks Online makes finding transactions quick and easy with the search function: Search for transactions.
Stay in touch whenever you have additional questions about QBO. I’m here to make sure you’re taken care of. Have a great rest of the day.
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