WBS element & is not statistical. Please correct.

What causes this issue?

You can only use statistical projects for the additional debiting
of projects (WBS elements) in asset posting.

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?

The WBS element &V1& is not statistical. Please choose a different
WBS element or delete the entry.

Error message extract from SAP system. Copyright SAP SE.