Field &1 does not exist

What causes this issue?

The definition of field &V2& includes a reference to field &V1&. However
, field &V1& is not registered.
This is most likely a program error.

System Response

When saving, the settings will not be saved.
In other cases, processing is continued.

How to fix this error?

Check your settings, and contact SAP if required.

Procedure for System Administrators

Check whether you can temporarily deregister field &V2& in the data
basis definition.

Error message extract from SAP system. Copyright SAP SE.