You cannot change the investment measure indicator (check your entry)

What causes this issue?

You want to change the control as a capital investment measure in the
asset class.

System Response

This change is not possible. Assets have already been created
in asset class &V1&.

How to fix this error?

Take back your change of the control, and set the control back to
capital investment measure.
Instead of changing the control function, you should take the new
assets in a class into consideration.

Error message extract from SAP system. Copyright SAP SE.