Field &1 does not exist in operating concern &2. See long text

What causes this issue?

The current field assignment between operating concern &V2& and
operating concern &V4& is inconsistent. Field &V1& from operating
concern &V2& should be assigned to field &V3& from operating concern
&V4&. However, field &V1& does not exist in operating concern &V2&.

System Response

The structure of operating concern &V2& has changed. This means that
processing cannot be continued.

How to fix this error?

Execute program RKE_BIW_CH_KOKRS_ERKRS_ASSIGN and delete or change this
assignment.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.