Greetings, @amd4780.

It's nice to see you here in the Community. I can help walk you through pulling up the report that you need in QuickBooks Desktop (QBDT).

You can pull up or run the Custom Transaction Detail report. This will display detailed vendor expenses totaled by Customer: Job. Here's how:

1. Go to Reports menu at the top, then pick Custom Reports and Transaction Detail on the drop-down.
2. In the Display tab:
     a. Enter the appropriate date range.
     b. In the Columns section, put a checkmark beside Source Name to add it to your columns and uncheck Name to remove it from the list.
     c. On the Total By drop-down, choose Customer.
3. Now, go to the Filters tab, then select Transaction Type on the Choose Filter page.
4. Select the transaction type associated with the Vendor purchases, then OK.

For your reference, you can also check out this article and scroll down to Vendor expenses by Customer:job for more information: Customize vendor reports.

There you have it! Let me know how it goes in the comment section. Please don't hesitate to post again if you have any follow-up questions. Take care always.