I hope your day is going well, @Jen G 91. I see you'd like to pull up a Transaction List by Vendor report in QuickBooks Online (QBO) filtered to a specific vendor. It's important to have precise insights into your dealings with each vendor, so let's get this sorted out. I want to ensure I can help you with this.

If you're using the modern view of the report, you can follow these steps:

1. Go to Reports.
2. Enter Transaction List by Vendor in the search field and select the report. 
   
3. Click on the Filter tab. 
4. On the right-side panel, choose Vendor name, equals, and place a checkmark for the specific vendor from the drop-down list.
   
5. The report will automatically update, and you can close the filter panel.

On the other hand, you can also utilize the classic view of the report. Here's how:

1. Go to Reports.
2. Enter Transaction List by Vendor in the search field and select the report. 
3. Click on Switch to classic view.
   
4. Choose Customize.
   
5. Pick Filter.
6. Place a checkmark for Vendor and choose from the drop-down list.
7. Hit Run report.
   

Need further help generating vendor reports in QBO? Our QuickBooks Live Expert Assisted team is here to elevate your experience. Our seasoned experts specialize in simplifying your financial processes and providing personalized guidance, ensuring you can effortlessly pull up the financial reports your business needs.

If you need to export your reports to an Excel file after this, I'm including this article as a guide: Export your reports to Excel from QuickBooks Online.

That's it! Now, you should be able to generate a transaction list for your chosen vendor. Should you have any further questions or require additional assistance, feel free to click on the Reply button. We're committed to offering ongoing support. Take care!