Asset was not created as old asset data record - (Check your entry)

What causes this issue?

This asset was not created as an old assets data record, and therefore
has no value segments. The capitalization or acquisition dates have not
been maintained.

System Response

They are managed on the maintenance screen 'Gen.data'.

How to fix this error?

A. If you want to process the asset as an old assets data record, enter
a capitalization date in the 'Gen.data' screen.
or
B. If you want to change the asset, use the change transaction for
master data and not for old assets data. Stop processing without
saving.

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.