Modifier
id or sku must be present for validation. When id is absent or null, the server resolves the modifier using sku (Codemax SKU code via shoppertise_variants.codemax_sku_id).{
"id": "MOD-LESS-SUGAR",
"sku": "GFBP090-LS",
"name": "Less Sugar",
"quantity": 1,
"price": 0
}