Delete flag not possible for asset class &

What causes this issue?

You cannot delete asset class &V1&.
The system determined, that asset &V3& exists in company code &V2&.
Therefore, you cannot mark asset class &V1& for deletion.

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?

You must first reorganize the assets, before the asset class can be
marked for deletion.

Error message extract from SAP system. Copyright SAP SE.