What causes this issue?

The chosen normalization variant (&V2&) is flagged as re-rollup and not
allowed.

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?

Choose another normalization or configure the compliance requirement
dependent normalization variants for the compliance workbench in the
Customizing activity <LS>Product Compliance -> General Configuration ->
Product and Specification Database -> Specify Normalization Variants</>

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.