3098036 - Down Payment Request for T&M leads to double items on Billing document

When creating a down payment request in a T&M scenario, subsequent billing document has double items.

As example:
1 T001 Consultant 2 H 2,500.00  USD  This is right, no problem.
2 T001 Consultant 2 H 1,000.00  USD  Should be Down payment and why billed quantity and product? 

SAP S/4HANA Cloud 2108

1. Create Customer Project
2. Maintain Billing information including Down Payment Request
3. Submit Down Payment Request via "Manage Project Billing" App
4. Post Down Payment Request
5. Payment of Down Payment
6. Book hours on same WBS
7. Invoice the hours to the customer

In Manage Billing Documents app, you can use settings to see the field item description. There you can find information that the second line item is a down payment settlement. When regards to downpayment item billed quantity and product they are equal because it is settled against the Time and Expense entry.

This is system expected behavior.

Project, Items, double, downpayment, billing. , KBA , SD-BIL , Billing , SD-BIL-2CL , Billing (Public Cloud) , PPM-SCL-BIL , Project Billing (Public Cloud) , Problem