Fraction &2 is not intended for re. partner &1

What causes this issue?

The system can not assign fraction &V2& to recycling partner &V1&.
The packaging type &V3& may also be incorrectly assigned.

System Response

Settlement for recycling partner &V1& may be incorrect.

How to fix this error?

Check the maintenance of fractions for recycling partner &V1& and for
all packaging and articles that are settled with recycling partner &V1&.

Error message extract from SAP system. Copyright SAP SE.