### Instruction:

Extract the cause and effect entities from the following sentence:
A Dynamic Assortment is when the quantity of the case remains fixed, however the mix of the lower level GTINs may vary from case to case

### Assistant:

VARIABLE: the mix of the lower level GTINs
CONDITION: may vary from case to case
KEYWORD: when
AND: however
EFFECT_1: A Dynamic Assortment is
CAUSE_1: the quantity of the case remains fixed
CAUSE_2: the mix of the lower level GTINs may vary from case to case

