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The uncollectible receivable amount on your Profit and Loss report under the Bad Debts expense account is affected by how you record the bad debt. If you are using QuickBooks Online (QBO) and your business uses accrual method accounting, we write off bad debt as a deduction. Here's an article you can refer to for more insights about bad debt from the IRS. 

We can run an Account QuickReport to check all the receivables you marked as bad debt to review the bad debt transactions. To accomplish this:

1. Go to the Gear icon on the top menu. 
2. Select Chart of accounts.
3. In the Action column of the bad debts accounts, tap Run report.

Then, by adding a note to their name, you can distinguish a bad-debt entity from your other customers. Here's how it's done:

1. Go to Get paid & pay and select Customers.
2. Choose the customer’s name.
3. At the upper right, tap Edit.
4. In the Display Name as field, enter “Bad Debt” or “No Credit” after the customer name.
5. Press Save.

You can check out this article for more details about writing off bad debt: Write off bad debt in QuickBooks Online. If the same thing happens, we can run some basic troubleshooting tests to figure out what's going on. Launch a private browser and rerun the Profit and Loss report. The private mode prevents the cache from being retained while the website is up and running, which may cause issues. Here's a list of shortcut keys that you can use to get to one:

• Ctrl+ Shift + N for Google Chrome
• Ctrl + Shift + P for Mozilla Firefox and Microsoft Edge
• Command + Shift + N for Safari

If it works fine, go back to your original browser and clear its cache to start fresh. Moreover, you can use another supported and up-to-date browser to narrow down the result.

Feel free to visit this article to see various details on how the Sales page shows you a great at-a-glance view of all the status of sales transactions like open and paid invoices: View sales transactions.

If you have any further questions or want to refer to something else, please click the Reply button below. Please know that I am always available to assist you with any QuickBooks issues you may be experiencing. Take care always.