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22 lines
1009 B
Markdown
22 lines
1009 B
Markdown
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contentType: explanation
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---
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# Transforming data
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n8n uses a predefined [data structure](/data/data-structure/) that allows all nodes to process incoming data correctly.
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Your incoming data may have a different data structure, in which case you will need to transform it to allow each item to be processed individually.
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For example, the image below shows the output of an [HTTP Request](/integrations/builtin/core-nodes/n8n-nodes-base.httprequest/) node that returns data incompatible with n8n's data structure. The node returns the data and displays that only one item was returned.
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To transform this kind of structure into the n8n data structure you can use the [Item Lists](/integrations/builtin/core-nodes/n8n-nodes-base.itemlists/) node.
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!!! note
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If you're using the HTTP Request node, you should use the Split Into items option to transform the data. You don't have to use a Code node in that case.
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