n8n Loop Over Items Node Not Producing Expected Data

Below is some guidance to help you troubleshoot the issue with your Loop Over Items node:

Check Your Connections

The Loop Over Items node works by emitting data on two outputs:

• Loop: Emits a batch of items at each iteration.
• Done: Once all iterations are complete, the node combines all batches and returns the final result.

If you’re only connecting the Loop output to the next node, you may never see the combined output. Make sure you attach your following processing node to the Done output.

Verify Batch Size and Reset Options

• Batch Size: Double-check that it aligns with the number of items you expect for each iteration.
• Reset (if used): Enabling Reset re-initializes the input data for each loop iteration. If not needed, consider leaving it off.

Additional Troubleshooting Steps

• Review Input Data: Confirm that the node is indeed receiving the expected number of items.
• Test Each Output: You can insert a Debug node (e.g., a Set or Code node) after both outputs to see if items are emitted separately on Loop or collectively on Done.

In summary, if your subsequent node is listening to the wrong output (for example, only attached to Loop rather than Done), you’ll see no final output—even though the node itself appears green-checked. Adjust your workflow to use the Done output after the Loop Over Items node, and that should resolve the issue.