Diagnosis
InfoObject &V1& is a customer object, as the name starts with a letter.This customer object is used by an SAP object (name starts with anumber) - in compounding, attributing, unit, reference, aggregationreference, outflow, inflow, elimination characteristic ornon-cumulative value change.
In addition, you are in an SAP System.

System Response
In SAP Sytems, SAP InfoObjects are only allowed to use SAP InfoObjects,not customer objects.

Procedure
Use an SAP InfoObject instead of &V1&.