How to target a JSON_LISTINGS_FEED at multiple locales under same seller/merchant account/id

[nightcoding2021]

Does each locale listing need to be an entirely separate messageId? In other words, repeat the messageId for each locale?

OR, can individual/separate locale attributes be set for each individual locale in the same messageId ? If so, how is that achieved? I haven't yet seen any multiple locale messageId examples.

{
"messageId": 1,
"sku": "valid_sku",
"operationType": "UPDATE",
"productType": "PRODUCT",
"requirements": "LISTING_OFFER_ONLY",
"attributes": {
"condition_type": [
{
"value": "new_new",
"marketplace_id": "valid_marketplace"
}
],
"merchant_suggested_asin": [
{
"value": "valid_asin",
"marketplace_id": "valid_marketplace"
}
],
"fulfillment_availability": [
{
"fulfillment_channel_code": "DEFAULT",
"lead_time_to_ship_max_days": 2,
"quantity": 1
}
],
"list_price": [{
"marketplace_id": "valid_marketplace",
"value_with_tax": 0.00,
"currency": "EUR"
}],
"purchasable_offer": [
{
"audience": "ALL",
"marketplace_id": "valid_marketplace",
"currency": "EUR",
"our_price": [
{
"schedule": [
{
"value_with_tax": 5.00
}
]
}
]
}
],
}
}

]
}