SAP Message ACRSL053 - Depreciation key &1 cannot be deleted

Diagnosis
Depreciation key &V1& in chart of depreciation &V2& cannot be deletedbecause values for the unit-of-production method of depreciation existfor at least for company code &V3&.

System Response
Depreciation key &V1& is not deleted.

Procedure
Delete the entries for the unit-of-production method of depreciation ofdepreciation key &V1& in transaction AO25.