quantityRulesAdd
Creates or updates existing quantity rules on a price list.
You can use the `quantityRulesAdd` mutation to set order level minimums, maximumums and increments for specific product variants.
quantityRulesDelete
Deletes specific quantity rules from a price list using a product variant ID.
You can use the `quantityRulesDelete` mutation to delete a set of quantity rules from a price list.