Good day, @hans_axiom.

Yes, In QuickBooks Online (QBO), you can view the product quantities from the purchase order report.

I'm happy to walk you through the process. Please refer to the steps below:

1. Go to Reports.
2. Navigate from the find report by name in the upper right corner.
3. Type in the Open Purchase Order Detail report on the search bar.
4. Filter the report period to All Dates.
5. Once done, click on Run Report.

Moreover, you can generate a report for open purchase orders. Nonetheless, once a purchase order is converted to a bill, there isn't an available option to pull up that report. Otherwise, you can still check your QTY manually once it is converted to a bill. Here's how you can do it:

1. Go to Expenses menu.
2. Click on Expenses.
3. On the All Transactions section, click on the dropdown.
4. Choose the desired Purchase Order to see the quantities.
5. Once there, click on Item details.

Our goal is to cater to the business needs of all our customers. I understand that adding this reporting option would greatly enhance the efficiency of your business operations. Please rest assured that your concern will be heard and addressed. We can propose this to our software engineers for consideration in future updates. To share your feedback, please follow these steps:

1. Go to Setting.
2. Under PROFILE, click on Feedback.
3. Once done, click Next.
4. In the feedback section, you can type in your suggestion to be directed to our product engineers.

Lastly, I've included a useful article that provides insights on how to customize a report: Customize reports in QuickBooks Online.

If you have additional questions or concerns, please add a comment. We're happy to help. Have a wonderful day ahead!