No register use possible in reference base &1

Message type: E = Error

Message class: AH - IS-U billing (master data)

Message number: 119

Message text: No register use possible in reference base &1



What causes this issue?

You have selected reference base &V1&. This is not suitable for
register discounts.


How to fix this error?

Select either quantity or demand as the reference base.

Error message extract from SAP system. Copyright SAP SE.