SAP Message BRAIN438 - Variable &1 cannot be used in this query

Diagnosis
Formula variable &V1& is used in formula element &V2&. It is to bereplaced from the characteristic &V3& or from an attribute of thecharacteristic &V3&. However, the query characteristics &V4&, forexample, references &V3&. Therefore, replacement is not possible and isnot supported.

Procedure
Create special variables, or change the query.