How To Fix VK859 - Foreign key cannot be created for the selected field &1-&2

SAP Error Message - Details

• Message type: E = Error

• Message class: VK - Pflege und Bearbeitung von Konditionen

• Message number: 859

• Message text: Foreign key cannot be created for the selected field &1-&2

What causes this issue?

In order to check a field or to display possible entries, the system
requires a foreign key dependency.
The system cannot create the foreign key dependency for field &V1&-&V2&
.
The system needs other fields to check the above field. However, in
this case, the required field is missing. A check cannot be carried
out.

System Response

The system allows a missing foreign key dependency but this is
detrimental to the functionality.

How to fix this error?

Please contact your system administrator if you cannot make the
required settings.

Error message extract from SAP system. Copyright SAP SE.