Diagnosis
You attempted to assign the value field with the technical name '&V1&'to an element. However, this value field is reserved for use in thescorecard itself and cannot be assigned to another element.
The value fields below are reserved and have the following functions:
Technical name of the value field,,Function
SCORE,,Value field for thescore of an object.
TREND,,Value field for thetrend indicator of anobject.
OSTATUS,,Value field for thestatus of an object, setby the person responsible.
GSTATUS,,Value field for the status of an object, calculated bythe system.
ASSESSMENT,,Value field that contains information about whetheran assessment was defined for the object.
RISKSCORE,,Value field for the risk score
RISKSTATUS,,Value field for the risk status

See also:
"Standard Value Fields with Fixed Meaning" in the documentation forSEM-CPM (SAP Library)

Procedure
Select another value field.