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Pushes values down from a parent record into each of its child records, all the way through any further levels of nesting. A common use is stamping a parent identifier onto every variant of a product, so each variant carries a reference back to the item it belongs to. You describe which children to reach and which values to copy into them, using placeholders to pull the values from the parent.

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Fields

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Sample data

FieldValue
Pattern to children within a parentvariants.*
Mapping of values from parent to child{ "parent": "&{identifier}" }
Keep using the context from the first levelOn
Input: 
{
    "product": "T-Shirt",
    "identifier": 1234,
    "variants": [
        { "name": "Red" },
        { "name": "Blue" }
    ]
}
Output: 
{
    "product": "T-Shirt",
    "identifier": 1234,
    "variants": [
        { "name": "Red", "parent": 1234 },
        { "name": "Blue", "parent": 1234 }
    ]
}
Each variant now carries a parent field pulled from the parent’s identifier.