The variant key [CR] determines which variant it belongs to.
It is a criterion that must be activated at the element configurations of the elements
that are used in the balancing. That means that it must also be activated at the product variant.
It is automatically generated by TiCon from the selected form of a product variant.
Up to 1000 variant keys can be stored per element.
"Variant key" column in the "Variants tab" of a mix balancing
"Variant key" field in the header of a mix balancing
Variant key in the "Validity" tab of a process element