custom_mc_advancements/data/landmarks/advancements/markets_and_malls.json

{
    "display": {
        "icon": {
            "item": "minecraft:shulker_box"
        },
        "title": "Markets and Malls",
        "description": "I'm gonna need more shulkers for all this loot...",
        "frame": "task",
	"show_toast": false,
        "announce_to_chat": false
    },
    "parent": "landmarks:shops",
    "criteria": {
        "instant": {
            "trigger": "minecraft:tick"
        }
    }
}