SAP Message AJ135 - Operand &1 requires a weighting key

Diagnosis
A variant is to be executed for which a quantity has been valuated anda billing line item relevant to posting is generated. Statistics areusually updated in this case. A weighting key is required to break downthe quantity correctly in statistics, but no weighting key has beenspecified.

Procedure
Maintain the weighting key field in the operand.