More than one settlement unit found for point of delivery &1

What causes this issue?

Settlement units &v1& and &v2& were found for point of delivery &v3&.
Both settlement units relate to <DS:DE.E_EDMSETTLVIEW>settlement view
</> &v4&.
The allocation between the point of delivery and
<DS:DE.E_EDMSETTLUNIT>settlement unit</> must be unique.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Allocate the point of delivery services to the point of delivery so
that the result is a unique allocation to <ZH>one</> settlement unit of
the settlement view.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.