Object category with business key "&1" cannot be deleted

What causes this issue?

The object category with the Business Key "&V1&" can only be deleted if
no further dependencies exist. There are, however, still dependent
<ZK>result fields</>.

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?

First delete the dependent <ZK>result fields</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.