What causes this issue?

Postings have been made to the asset, or it has further intervals.
Therefore, you cannot change the business area. Account assignment has
been made in business area &V2& from &V3& to &V4&. Changes to business
area &V1& are not possible.

System Response

Changes cannot be performed.

How to fix this error?

If you want to change the asset business area, you have to first
transfer the asset if postings have been made to the asset,
or
If no postings have been made to the asset, you can change the business
area if you enter an overview period which encompasses all intervals.
The business area can then be changed.

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.