Oleg Ivaniv This workflow corresponds to n8n.io template #1892 — we link there as the canonical source.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"nodes": [
{
"id": "b83bfb2d-6d1b-4984-8fc4-6cf0a35309dc",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
1380,
960
],
"parameters": {
"width": 1074,
"height": 468,
"content": "# \u26a0\ufe0f When and how to use this workflow\n\nIf you previously upgraded to n8n version `0.214.3`, some of your workflows might have accidentally been re-wired in the wrong way. This affected nodes which have more than 1 output, such as `If`, `Switch`, and `Compare Datasets`.\n\nThis workflow helps you identify potentially affected workflows and nodes that you should check.\n\n**\u2757\ufe0fPlease ensure to run this workflow as the instance owner\u2757\ufe0f**\n\n1. Configure the \"Get all workflows\" node to use your n8n API key. (You can find/create your API key under \"Settings > n8n API\")\n2. If you have community nodes installed that have more than 1 output, add them to the constant `MULTI_OUTPUT_NODES` in the \"Parse potentially affected workflows\" code node.\n3. Activate the workflow\n4. Visit `{YOUR_INSTANCE_URL}/webhooks/affected-workflows` from your browser\n5. The report will list potentially affected workflows/nodes.\n 1. The square brackets after the workflow name list the potentially affected nodes\n 2. Inspect each reported workflow individually (you can click on a row to open it in a new tab)\n 3. **Verify that the correct outbound connectors are used to connect subsequent nodes.**"
},
"typeVersion": 1
},
{
"id": "ba065db3-be3c-4694-afbd-c9095526adf6",
"name": "Get all workflows",
"type": "n8n-nodes-base.n8n",
"position": [
1540,
1460
],
"parameters": {
"filters": {}
},
"credentials": {
"n8nApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "0fdd3ac4-8c11-4c90-b613-fcbe479a71f6",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
1380,
1460
],
"parameters": {
"path": "affected-workflows",
"options": {
"rawBody": false,
"responseHeaders": {
"entries": [
{
"name": "Content-Type",
"value": "text/html; charset=utf-8"
}
]
}
},
"responseMode": "responseNode"
},
"typeVersion": 1
},
{
"id": "88725f34-678a-4127-b163-368ab2fc7b39",
"name": "Parse potentially affected workflows",
"type": "n8n-nodes-base.code",
"position": [
1880,
1460
],
"parameters": {
"jsCode": "// Define an array of objects representing node types that have multiple outputs.\n// Each object specifies the node type and the number of outputs it has.\nconst MULTI_OUTPUT_NODES = [\n { type: 'n8n-nodes-base.compareDatasets', outputs: 4 }, \n { type: 'n8n-nodes-base.switch', outputs: 4}, \n { type: 'n8n-nodes-base.if', outputs: 2}\n]\n\n// Initialize an empty array to store the affected workflows.\nconst affectedWorkflows = [];\n\n// Loop through each item in the $input array.\nfor (const item of $input.all()) {\n // Get the workflow data from the item.\n const workflowData = item.json;\n\n const nodes = workflowData.nodes;\n const connections = workflowData.connections;\n\n // Initialize an empty array to store the potentially affected connections.\n const potentiallyAffectedNodes = [];\n\n for (const connectionName of Object.keys(connections)) {\n const connection = connections[connectionName];\n // Match connection by its name to get the node data\n const connectionNode = nodes.find(node => node.name === connectionName);\n\n // Check if the connection node is a multi-output node.\n const matchedMultiOutputNode = MULTI_OUTPUT_NODES.find(n => n.type === connectionNode.type);\n if(matchedMultiOutputNode) {\n const connectedOutputs = connection.main.filter(c => c && c.length > 0);\n\n // Check if the connection has empty outputs.\n const hasEmptyOutputs = connectedOutputs.length < matchedMultiOutputNode.outputs;\n\n // If there are no connected outputs, skip this connection, it couldn't been affected by the migration\n if(connectedOutputs.length === 0) continue;\n\n // If the connection has empty outputs, it might have been affected by the wrong connections migration\n // which filtered-out empty indexes\n if(hasEmptyOutputs) potentiallyAffectedNodes.push(connectionName);\n }\n }\n\n if(potentiallyAffectedNodes.length > 0) {\n affectedWorkflows.push(\n { \n workflowId: workflowData.id, \n workflowName: workflowData.name,\n active: workflowData.active, \n potentiallyAffectedNodes\n }\n )\n }\n}\n\nreturn {workflows: affectedWorkflows};\n"
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "a2324a53-da62-4386-8c86-4d85ffb228b4",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
1880,
1620
],
"parameters": {
"width": 236,
"height": 194,
"content": "# \ud83d\udc46\n\nIn case you have community nodes installed, add them to `MULTI_OUTPUT_NODES`"
},
"typeVersion": 1
},
{
"id": "019f564b-edd4-40be-97f5-f1b1cf433005",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
1540,
1620
],
"parameters": {
"width": 208,
"height": 197,
"content": "# \ud83d\udc46\n\nConfigure this node to use your n8n API credential"
},
"typeVersion": 1
},
{
"id": "9fa255a8-8e2d-4e3f-ad83-d56b69066e67",
"name": "Generate Report",
"type": "n8n-nodes-base.html",
"position": [
2200,
1460
],
"parameters": {
"html": "\n<!DOCTYPE html>\n\n<html>\n<head>\n <meta charset=\"UTF-8\" />\n <title>n8n workflows report</title>\n</head>\n<body>\n <div class=\"container\">\n <h1>Affected workflows:</h1>\n <ul id=\"list\"></ul>\n </div>\n</body>\n</html>\n\n<style>\n.container {\n background-color: #ffffff;\n text-align: center;\n padding: 16px;\n border-radius: 8px;\n}\n\nh1 {\n color: #ff6d5a;\n font-size: 24px;\n font-weight: bold;\n padding: 8px;\n}\n\nh2 {\n color: #909399;\n font-size: 18px;\n font-weight: bold;\n padding: 8px;\n}\n\nul {\n list-style: none;\n text-align: left;\n padding: 0;\n}\n\nli {\n margin: 8px 0;\n}\n\na {\n color: #409eff;\n text-decoration: none;\n transition: color 0.2s ease-in-out;\n}\n\na:hover {\n color: #ff9900;\n}\n</style>"
},
"typeVersion": 1
},
{
"id": "7923de27-9d69-4ad2-a6e1-dc061c9e8e8f",
"name": "Serve HTML Report",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
2360,
1460
],
"parameters": {
"options": {
"responseHeaders": {
"entries": [
{
"name": "Content-Type",
"value": "text/html; charset=utf-8"
}
]
}
},
"respondWith": "text",
"responseBody": "={{ $node[\"Generate Report\"].parameter[\"html\"] }}\n<script>\nconst { workflows } = {{ JSON.stringify($node[\"Parse potentially affected workflows\"].json) }}\n\nconst $list = document.getElementById('list');\n// Append LI element to the UL element for each item in the affectedWorkflows array\nworkflows.forEach((workflow) => {\n const $listItem = document.createElement('li');\n if(!workflow) return;\n const title = `<a \n target=\"_blank\" href=\"//${window.location.host}/workflow/${workflow.workflowId}\">ID: ${workflow.workflowId}: ${workflow.workflowName} [${workflow.potentiallyAffectedNodes.join(', ')}]</a>`\n $listItem.innerHTML = title\n $list.appendChild($listItem);\n});\n\n</script>"
},
"typeVersion": 1
},
{
"id": "fd63ade5-c7b4-43d5-9849-79bb9aa8dca3",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
2360,
1620
],
"parameters": {
"width": 451,
"height": 194,
"content": "# \ud83d\udc46\n\nFind the generated report at `{YOUR_INSTANCE_URL}/webhooks/affected-workflows`"
},
"typeVersion": 1
}
],
"connections": {
"Webhook": {
"main": [
[
{
"node": "Get all workflows",
"type": "main",
"index": 0
}
]
]
},
"Generate Report": {
"main": [
[
{
"node": "Serve HTML Report",
"type": "main",
"index": 0
}
]
]
},
"Get all workflows": {
"main": [
[
{
"node": "Parse potentially affected workflows",
"type": "main",
"index": 0
}
]
]
},
"Parse potentially affected workflows": {
"main": [
[
{
"node": "Generate Report",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
n8nApi
Pro
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About this workflow
If you previously upgraded to n8n version , some of your workflows might have been accidentally rewired in the wrong way. This issue affected nodes with more than one output, such as , , and .
Source: https://n8n.io/workflows/1892/ — original creator credit. Request a take-down →
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