Diagnosis
In billing, values were calculated for operand &v1& that are to beupdated in the installation facts. In this case, the value is theaverage price for a price operand.
The update could not be carried out because in the installation factsfor operand &v1& (in the period &v2& -- &v3&), no price key was foundto which the update is to be carried out.

System Response
Update of average price is canceled.

Procedure
Allocate an average price - to which the update is to be carried out -to operand &v1& in the installation facts for the period &v2& -- &v3&.