What causes this issue?

You changed the depreciation terms in a depreciation area. This
depreciation area is a reference depreciation area (according to its
definition in Customizing) for one or more other depreciation areas.
This means the other areas adopt depreciation terms from this area. The
changes you made will only be effective automatically in the dependent
depreciation areas if they are defined for mandatory identical adoption
of parameters (the "Identical" parameters indicator is set). Your
changes are <ZH>not</> automatically adopted in dependent areas that
are not defined for identical parameters to be copied (simple adoption
of parameters with the option to change them).

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 can save the asset following the warning message by pressing
<LS>Enter</>.

Error message extract from SAP system. Copyright SAP SE.