Hello there again, azadehgar.

I appreciate your efforts in adjusting the inventory items and letting us know the result. We'll have to perform some basic troubleshooting steps to get your inventory information in order.

As mentioned by my peer, inventory adjustments should not affect created bills. Also, the system will not create a bill for the items.

Let’s run the Verify and Rebuild Data Utilities as your primary troubleshooting steps. These tools are used to fix integrity issues in the company file.

Before performing any steps, save a copy of the company file to keep a record of your transactions. When you’re ready, let’s go to the File menu to launch the utilities.

Here’s how:

1. Click the File menu at the top to choose Utilities and Rebuild Data.
2. Hit OK to create a backup of the company file.
3. Press Save to keep the copy.
4. Select OK once the Rebuild is completed.
5. Then, go back to the File menu to choose Utilities and Verify Data.
6. If it finds an issue, click Rebuild.

If it didn’t find any errors, open the report again to check the inventory adjustment. If you continue to get the same result, resort to the item list.

The process will help make your lists back to their default order. Here’s an article that will guide you through the process: Re-sort lists in QuickBooks Desktop.

For additional resources, the following articles will help you resolve any data and inventory issues in QuickBooks.

• Fix data damage on your QuickBooks Desktop company file
• Fix negative inventory issues

Let me know in the comment section below if you need help when working in QuickBooks. I’ll get back to make sure you’re taken care of. Have a good one.