What causes this issue?

The System has calculated the expired useful life from the depreciation
start date as having &V1& years and &V2& periods. This differs from the
expired useful life entered with &V3& years and &V4& periods.

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?

Check whether this difference is justifiable. It may be because of
using multiple shifts or shutdown periods.

Error message extract from SAP system. Copyright SAP SE.