Why are expenses in my OTBI report multiplied?

Summary:

I'm trying to build a report in OTBI that details the status of corporate card transactions. We would like to see what transactions have not been placed on an expense report at the end of a billing cycle. I'm using the "Expenses - Expense Transactions Real Time" subject area. When I only use corporate card data, the billed amounts are correct. However, when I try to layer in the expense report number and report status, the amounts begin multiplying. What I'm seeing is that total billed amounts are multiplying based on how many itemization lines there are. Are there any