I have a 3rd party vendor that enters bill in my file, I just realised they have been double entered. What the quickest way to delete the dups?

Hello there, @Keepitsimple123.

I can help you delete the duplicate transactions by batch in QuickBooks. Here's how:

1. Go to the File menu, then select Switch to Single-user mode.
2. Select the Accountant menu and click Batch Delete/Void Transactions.
3. From the Batch Delete/Void Transactions window, click the Transaction Type drop-down, then choose Bills to filter.

     4. Put a check-mark beside the transaction date you want to delete.

     5. Select Review & Delete.

     6. Click the Back-Up & Delete drop-down arrow, then choose to Delete only.

     7. Hit Yes to confirm you want to delete the transactions.

After you delete the transactions, you can select the View Deleted/Voided Transaction Report window to print a copy of the deleted transactions.

Also, you can check this article for future reference on how to pay a bill: Pay bills in QuickBooks Desktop.

I'm still here whenever you need help in handling duplicate transactions in QuickBooks Desktop.