Diagnosis
Depreciation area &V1& is needed to determine the mean value. However,depreciation area &V1& has not been defined in the chart ofdepreciation &V2&. Depreciation key &V3& cannot be used.

Procedure
a. Define the chart of depreciation correctly
or
b. Correct the formula for determining the mean value.
For the time being, you cannot use the mean value key &V3&.