The flow
Starts it 4Logic 7Service 9
The steps in the order they run, from what starts it.
- 1Webhook, JSON InvoiceWebhookStarts it
- 2Webhook, PDF InvoiceWebhookStarts it
- 3Merge Intake PathsMergeLogic
- 4OCR, Extract Invoice FieldsHttp RequestService
- 5Parse Invoice PayloadCodeLogic
- 6Is Valid InvoiceIfLogic
- 7Lookup Existing InvoiceGoogle SheetsService
- 8Flag Duplicate StatusSetLogic
- 9Duplicate FoundIfLogic
- 10Slack, Duplicate AlertSlackService
- 11Teams, Duplicate AlertHttp RequestService
- 12Prepare ApprovalSetLogic
- 13Log Duplicate to SheetGoogle SheetsService
- 14Register Unique InvoiceGoogle SheetsService
- 15Respond, Duplicate BlockedRespond To WebhookStarts it
- 16Push to ERP SystemHttp RequestService
- 17Needs ApprovalIfLogic
- 18Respond, Invoice AcceptedRespond To WebhookStarts it
- 19Email, Manager ApprovalGmailService
- 20Slack, Cleared NoticeSlackService
How it's built
- Starts on
- Another system calling it
- Steps
- 20, with 3 branches
- Size
- Medium: a working afternoon
- Connects to
- Gmail, Google Sheets, Slack
- Model
- None. This is plumbing, not judgement
Questions
What does it need to run?
An n8n account, plus your own Gmail, Google Sheets and Slack accounts. You connect your own accounts after importing it; none are included.
What starts it?
It starts on another system calling it.
Does it use AI?
No. Every step is fixed logic or a call to a service, so it does the same thing every time.
How long does it take to set up?
Plan an afternoon. 20 steps is enough that you should read each one before running it.
How do I import it?
Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.
Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 20 steps before you point it at anything that matters.