Log invoice approval decisions from Slack to Google Sheets
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This workflow has 10 nodes and runs when an HTTP POST request hits its webhook URL. Along the way it connects Google Sheets and Slack.
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- Parse Slack Payload (Edit Fields (Set)): sets 1 field: payload
- Extract Decision & Invoice Data (Edit Fields (Set)): sets 9 fields: decision, decided_by, decided_by_id…
- Route: Approved / Rejected / Flagged (Switch): routes items into 3 branches
- Log to Sheets: Approved (Google Sheets): append
- Log to Sheets: Rejected (Google Sheets): append
- Log to Sheets: Flagged (Google Sheets): append
- Slack: uses Slack
- Slack: uses Slack
- Slack: uses Slack
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (5)
- Webhook
n8n-nodes-base.webhook - Edit Fields (Set)
n8n-nodes-base.set - Switch
n8n-nodes-base.switch - Google Sheets
n8n-nodes-base.googleSheets - Slack
n8n-nodes-base.slack
From the author
What This Workflow Does Listens for button clicks from the Invoice → Slack Approval workflow. When someone clicks Approve, Reject, or Flag on an invoice in Slack, this workflow captures that decision, logs it to Google Sheets, and sends a confirmation…