TCG66: cannot find name for characteristic &1, value assignment type &2

What causes this issue?

The system was unable to find a name for the specified characteristic
&V1&, which is assigned to the value assignment type &V2&. This
indicates that the corresponding characteristic does not (yet) exist in
the system.

System Response

The (new) field for the characteristic name in table TCG66 remains blank
for the current record.

How to fix this error?

Ensure that you have converted and activated the table with the
characteristic definitions (CABN).
Should an error occur during the conversion program, there is a risk of
data inconsistencies. In this case, you cannot use Product Safety and
Stewardship. Lock the relevant transactions (all transactions starting
with CG) until the problem has been solved.

Error message extract from SAP system. Copyright SAP SE.