Diagnosis
In the binding definition, you assigned a source element or anexpression with an unspecified object type reference to a targetelement with reference to object type '&V2&'.
The object type of the source element is hence first determined atruntime from the value assigned. The consistency of this bindingassignment can therefore not be checked until runtime.

System Response
As the consistency of this binding assignment cannot be checked untilruntime, this definition is not recommended.
The binding execution has errors if runtime reveals

• that the object type of the binding source is not the same as the
target object type

• and that the source element does not reference a subtype of the target
object type either.
This can mean that the workflow is forced into status error aswell.