The sum of the values in the %2.1 field cannot be calculated./n/nYou must define, activate, and select a key that contains ...

The sum of the values in the %2.1 field cannot be calculated./n/nYou must define, activate, and select a key that contains the following key fields, in any order. The %2.1 field should be associated with it as a SumIndexField./n/nTable: %1.1/nKey Fields: %1.6
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