Silent Null & PairedItem Range Output Auditor

How it works

1. 1.Manual Trigger runs a Code node emitting four fictional pairs: healthy, silent null, missing field, out-of-range index
2. 2.The audit Code node compares fields, validates pairedItemIndex against sourceLength, and builds a detailed defects array per record
3. 3.IF routes damaged (TRUE) to the Damaged Records Path noOp; healthy (FALSE) to Set tagging verified_healthy while keeping all fields
4. 4.Merge appends both paths (empty-branch safe via alwaysOutputData) and a final Code node emits exactly one summary item

Use cases

• Auditing multi-branch stage outputs before downstream stages
• Catching silent item loss in production executions
• Guaranteeing record completeness before delivery or billing

Requirements

• n8n 2.44.4 or newer
• No credentials, no external calls
• For real use: input/output pairs of the same schema with pairedItemIndex and sourceLength

Setup and testing in n8n

1. Import the JSON into n8n and run Execute Workflow
2. Confirm ORD-1002, ORD-1003, ORD-1004 flow through the Damaged Records Path and only ORD-1001 carries auditStatus=verified_healthy
3. Verify the final report shows 1 healthy, 3 damaged with per-type counts and otherDefectCount at zero
4. Replace the sample loader with clean pairs for a zero summary, and with all-damaged pairs to verify Merge completes

Service Value

Ready-made workflow template for automation delivery and service execution.