As follow up, I included my domain model and an incomplete rule

*Problem facts*:
Entity: 
    weight: int
Bucket:
    id: int

*Planning entity*:
EntityBucketAssignment
    entity: Entity
    bucket: Bucket (planning variable)

*The rule fragment is*:
when
    $b1:Bucket($id:id)
    $minSum:Number from accumulate(
        Entity(
            bucket==$b1,
            $weight:wieght
            ),
        sum($wieght)
    )
    not($b2:Bucket(id!=$id)
        $minSum:Number from accumulate(
            Entity(
                bucket==$b2,
                $weight:wieght
                ),
            sum($wieght)
        )
    )
then
    ...
        
Could you correct this?
   

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