26B Redwood Purchase Agreements: Unable to create a fixed-price services line

Summary:

We are currently testing 26B in our NPEs. When attempting to create a new purchase agreement or add a new line to an existing agreement, we are unable to create a fixed price services line.

Users receive the following error:
"The PriceBreakLookupCode attribute isn't allowed when the SERVICES purchase basis is selected for the line type. (PO-2056058)"

There are no price breaks configured or selected on the line.

This is the same for all users in all NPEs.