Manage engineering change requests via webhooks and Slack approvals

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1. Workflow Overview

️ Manage Engineering Change Requests (ECR) via Slack Overview Streamline your engineering change management process by integrating generic webhooks with Slack interactive approvals. This workfl...

Best for

Engineering automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.if, n8n-nodes-base.switch, n8n-nodes-base.set, n8n-nodes-base.slack, n8n-nodes-base.wait, n8n-nodes-base.respondtowebhook, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by TAKUTO ISHIKAWA.

Original n8n.io source

1.1 Workflow description

Title: Manage engineering change requests via webhooks and Slack approvals
Workflow name: Manage engineering change requests via webhooks and Slack approvals

⚙️ Manage Engineering Change Requests (ECR) via Slack

📋 Overview

Streamline your engineering change management process by integrating generic webhooks with Slack interactive approvals. This workflow receives a generic design change request, categorizes its impact level, and routes it to a Slack channel for approval.

This template is ideal for Mechanical Engineering teams, Manufacturing, and Project Managers who need to track drawing changes (ECR/ECO) without complex PLM software.

🚀 How it works

Receive Request: Catches a POST webhook containing drawing_no and change_reason.
Validation & Logic: Ensures data integrity and determines the "Impact Level" (High, Medium, Low) based on keywords in the reason (e.g., "Dimension" triggers specific logic).
Notification: Sends a formatted message to a designated Slack channel with a link to an approval form.
Human in the Loop: The workflow waits (pauses) until a reviewer approves or rejects the request via the n8n form.
Final Notification: Posts the final decision back to Slack.

🛠️ Setup Steps

Configure Webhook: Use the production URL of the Webhook node in your upstream application (e.g., Google Forms, internal tools, or Typeform).
Connect Slack: Select your Slack credential and choose the channel where approval requests should be sent in the Notify Slack nodes.
Customize Logic: Open the Switch node to adjust the keywords (e.g., "Material", "Dimension") that determine the impact level according to your company's policy.

💡 Requirements

n8n (Self-hosted or Cloud)
Slack account and a channel for notifications

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Webhook - Receive Drawing Change Request

Type / Role: n8n-nodes-base.webhook - webhook
Config choices: Version 2.1

Block 2 - IF - Validate Required Fields

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 3 - Switch - Determine Approver by Impact

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.4

Block 4 - Set Low

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 5 - Set High

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 6 - Set Medium

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 7 - Set Medium (Fallback)

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 8 - Notify Slack (Approval Request)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.4

Block 9 - Wait (Form)

Type / Role: n8n-nodes-base.wait - wait
Config choices: Version 1.1

Block 10 - Notify Approval (Slack)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.4

Block 11 - Notify Rejection (Slack)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.4

Block 12 - Return Response (Error)

Type / Role: n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices: Version 1.5

Block 13 - Generate ECR Metadata (Set Node)

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 14 - Return Success (Respond to Webhook)

Type / Role: n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices: Version 1.5

Block 15 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 16 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 17 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 18 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 19 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 20 - Check Decision

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.4

Block 21 - Generate Secure Token

Type / Role: n8n-nodes-base.crypto - crypto
Config choices: Version 1

3. Summary Table

Workflow	Manage engineering change requests via webhooks and Slack approvals
Complexity	advanced
Nodes	21
Categories	Engineering
Author	TAKUTO ISHIKAWA
Published	07 Mar 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13932/13932.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Engineering workflows

Frequently asked questions

What does Manage engineering change requests via webhooks and Slack approvals do?

️ Manage Engineering Change Requests (ECR) via Slack Overview Streamline your engineering change management process by integrating generic webhooks with Slack interactive approvals. This workfl...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Engineering use case.

TAKUTO ISHIKAWA

4 workflows

Nodes

n8n-nodes-base.webhook n8n-nodes-base.if n8n-nodes-base.switch n8n-nodes-base.set n8n-nodes-base.slack n8n-nodes-base.wait n8n-nodes-base.respondtowebhook n8n-nodes-base.stickynote

Complexity

advanced

Published 07 Mar 2026

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/13932/13932.json

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Manage engineering change requests via webhooks and Slack approvals

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

⚙️ Manage Engineering Change Requests (ECR) via Slack

📋 Overview

🚀 How it works

🛠️ Setup Steps

💡 Requirements

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Webhook - Receive Drawing Change Request

Block 2 - IF - Validate Required Fields

Block 3 - Switch - Determine Approver by Impact

Block 4 - Set Low

Block 5 - Set High

Block 6 - Set Medium

Block 7 - Set Medium (Fallback)

Block 8 - Notify Slack (Approval Request)

Block 9 - Wait (Form)

Block 10 - Notify Approval (Slack)

Block 11 - Notify Rejection (Slack)

Block 12 - Return Response (Error)

Block 13 - Generate ECR Metadata (Set Node)

Block 14 - Return Success (Respond to Webhook)

Block 15 - Sticky Note

Block 16 - Sticky Note1

Block 17 - Sticky Note2

Block 18 - Sticky Note3

Block 19 - Sticky Note4

Block 20 - Check Decision

Block 21 - Generate Secure Token

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions