mirror of
https://github.com/n8n-io/n8n-docs.git
synced 2025-11-20 17:48:34 +00:00
27 lines
1.1 KiB
Markdown
27 lines
1.1 KiB
Markdown
# Item linking errors
|
|
|
|
n8n displays errors related to data mapping when there are problems tracing an item's linked parent items back through the workflow.
|
|
|
|
## Errors when pinning data
|
|
|
|
If you see this error message:
|
|
|
|
> ERROR: '`<node-name>`' must be unpinned to execute
|
|
|
|
Unpin the data in the named node, and execute the node to get fresh data.
|
|
|
|
This error has two possible causes:
|
|
|
|
* The number of inputs into the pinned node has changed since you pinned it.
|
|
* You've edited the pinned data and changed the number of items.
|
|
|
|
|
|
## Errors when using the Code node
|
|
|
|
If you see this error message:
|
|
|
|
> ERROR: Can't get data for expression under '`<field-name>`' field
|
|
|
|
You need to supply item linking information yourself, because you have an item linking scenario that n8n can't automatically handle. Refer to [Item linking concepts](/data/data-mapping/data-item-linking/item-linking-concepts/) for a conceptual understanding of item linking, and [Manage item linking in the Code node](/data/data-mapping/data-item-linking/item-linking-code-node/) for detailed guidance on handling item linking.
|
|
|