bedrock-samples/metadata/json_schemas/server/1.20.50/item/components/StackedByData.json

{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "$id": "3178615832",
    "x-format-version": "1.20.50",
    "x-minecraft-version": "1.21.90-beta.3",
    "title": "minecraft:stacked_by_data",
    "description": "The stacked_by_data component determines whether the same items with different aux values can stack. Also defines whether the item entities can merge while floating in the world.",
    "oneOf": [
        {
            "type": "boolean"
        },
        {
            "type": "object",
            "properties": {
                "value": {
                    "description": "Determines whether the same item with different aux values can stack. Also defines whether the item entities can merge while floating in the world.",
                    "type": "boolean"
                }
            }
        }
    ]
}