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Case Study / Zapier / 04

Document Review & Approval System

An AI-assisted document review workflow that analyzes uploaded business documents, sends them for human approval in ClickUp, routes the files based on the decision, and keeps Airtable and Slack synchronized throughout the process.

01 / Project Overview

AI-assisted review. Human-controlled decisions.

This system automates the intake, analysis, and approval flow for internal business documents. New files uploaded to Google Drive are checked for duplicates, analyzed by AI, stored in Airtable, and sent to ClickUp for human review. Once the reviewer changes the task status, a second workflow updates Airtable, moves the document to the correct folder, and sends a Slack notification based on whether the document was approved, rejected, or marked for revision.

02 / Stack / Tools

Connected tools for a trackable review process.

  • Google Drive
  • Google Docs
  • Airtable
  • ClickUp
  • Slack
  • Zapier
  • AI by Zapier
  • Formatter by Zapier
  • Filter by Zapier
  • Paths by Zapier

03 / Workflow Architecture / Zap 1

Document intake & AI review

A new document trigger checks Airtable for duplicates. New files are extracted from Google Docs, analyzed by AI, recorded in Airtable, turned into ClickUp approval tasks, and then sent to Slack for human review. Existing documents are routed to a duplicate-alert path.

03 / Workflow Architecture / Zap 2

Human approval & decision routing

A ClickUp status change triggers the second workflow. The linked Airtable record is found, the approval decision is validated, and the document is routed through one of three paths: Approved, Rejected, or Needs Revision. Airtable is updated, the document is moved in Google Drive, and Slack notifications are sent.

CRM / Tracking

Review database

Airtable stores document IDs, names, Google Drive links, document type, AI summary, missing information, risk indicators, AI recommendation, and final review status.

Human Review

Approval queue

ClickUp organizes approval tasks by status, including Pending Human Review, Approved, Rejected, and Needs Revision. This is where the final human decision is made.

Final Output / Approved

Approved notification

When a document is approved, Slack receives a summary with the document information, review result, final status, and confirmation that Airtable and Google Drive were updated.

Final Output / Needs Revision

Needs revision notification

If the reviewer requests changes, the workflow records the decision, updates Airtable, moves the document to the revision folder, and notifies the team in Slack.

Final Output / Rejected

Rejected notification

Rejected documents are routed to the rejected folder and the decision is posted to Slack so the team can determine whether resubmission is needed.

04 / Workflow Breakdown / Zap 1

Document Intake & Review

12 configured steps across new-document and duplicate-document paths. The workflow checks for duplicates before extracting content, generating AI analysis, creating approval tasks, and notifying the reviewer.

Shared intake & duplicate check

  1. 01Google Drive — New Document Uploaded
  2. 02Airtable — Check Existing Document
  3. 03Paths by Zapier — Document Deduplication

New document path

  1. 04New Document Conditions
  2. 05Google Docs — Extract Document Content
  3. 06AI by Zapier — Analyze Business Document for Review
  4. 07Airtable — Create Document Record
  5. 08ClickUp — Create Approval Task
  6. 09Airtable — Save ClickUp Task ID
  7. 10Slack — Notify Human Reviewer

Existing document path

  1. 11Existing Document Conditions
  2. 12Slack — Notify Duplicate Document

04 / Workflow Breakdown / Zap 2

Human Approval & Document Routing

22 configured steps across three human-review outcomes. A ClickUp status update triggers a routing workflow that validates the decision and processes Approved, Rejected, or Needs Revision actions.

Core approval trigger

  1. 01ClickUp — Document Approval Status Changed
  2. 02Airtable — Find Linked Document
  3. 03Filter by Zapier — Validate Approval Decision
  4. 04Paths by Zapier — Human Approval Decision Router

Approved path

  1. 05Approved Conditions
  2. 06Filter by Zapier — Prevent Duplicate Approval
  3. 07Google Drive — Move Approved Document
  4. 08Airtable — Update Approved Document
  5. 09Formatter by Zapier — Format Approval Timestamp
  6. 10Slack — Notify Document Approved

Rejected path

  1. 11Rejected Conditions
  2. 12Filter by Zapier — Prevent Duplicate Rejection
  3. 13Google Drive — Move Rejected Document
  4. 14Airtable — Update Rejected Document
  5. 15Formatter by Zapier — Format Rejection Timestamp
  6. 16Slack — Send Rejection Message

Needs revision path

  1. 17Needs Revision Conditions
  2. 18Filter by Zapier — Prevent Duplicate Revision
  3. 19Google Drive — Move Document for Revision
  4. 20Airtable — Update Revision Status
  5. 21Formatter by Zapier — Format Revision Timestamp
  6. 22Slack — Notify Revision Required

05 / Key Capabilities

Structured review without losing oversight.

  • AI-assisted document analysis
  • Duplicate document detection
  • Structured Airtable tracking
  • Human-in-the-loop approval control
  • ClickUp task creation and status-based routing
  • Approved / rejected / revision document routing
  • Slack notifications for each review outcome
  • Preserved audit trail across systems

06 / Final Outcome

A practical review process with human oversight.

This automation combines AI-assisted review with final human approval, giving teams a practical way to process business documents without losing oversight. AI supports content extraction and initial assessment, while ClickUp, Airtable, Google Drive, and Slack keep the review process organized, trackable, and decision-ready.

AI recommendations are advisory. The human reviewer makes the final decision, including when it differs from the AI assessment. The supplied examples document Approved, Rejected, and Needs Revision outcomes without claiming measured time savings or percentages.