How to Use Power Automate for Approval Workflows in Microsoft 365

Overview

If you are new to Power Automate approvals, the key idea is simple: a person submits a request, one or more approvers review it, and the system records the outcome and triggers the next step. That next step might be sending an email, updating a SharePoint list, posting to Teams, creating a task, or notifying a manager.

A solid Power Automate approval workflow usually includes five pieces:

• A trigger that starts the process, such as a new Microsoft Forms response, a SharePoint list item, or a manual button.
• A request record that stores the important details, often in SharePoint, Dataverse, or another structured source.
• An approval action that sends the decision request to one or more people.
• Branching logic for approved, rejected, timed-out, or cancelled paths.
• Notifications and updates so requesters and administrators know what happened.

The most common mistake is starting from a template before defining the real-world process. Templates can help, but they also encourage quick builds that are hard to maintain. For evergreen results, design the workflow first and only then map it to Power Automate actions.

Use approval automation when the process has clear inputs, named decision-makers, and repeatable outcomes. Good examples include document approval, purchase requests, access requests, policy sign-off, leave requests, content publishing, and lightweight change approvals. If the process is highly variable or depends on long back-and-forth discussion, approvals may still help, but you may need a Teams-based collaboration step before the formal decision.

Step-by-step workflow

Here is a practical process you can follow to build a Power Automate approval workflow that remains manageable as Microsoft 365 evolves.

1. Define the business event that starts the flow

Begin by asking: what exactly counts as a request? Do not answer with a tool name. Answer with a business event.

For example:

• An employee submits a purchase request.
• A team owner asks for a new SharePoint site.
• A department uploads a policy document for review.
• A manager requests external sharing for a project folder.

Then choose the best trigger. In Microsoft 365, common triggers include:

• New item in a SharePoint list
• New response in Microsoft Forms
• Manual trigger from Power Automate
• New file in a SharePoint library
• Selected message or item in Outlook or Teams

If you want dependable reporting, a SharePoint list is often the easiest starting point because it gives you columns for status, requester, date, approver, comments, and reference IDs. That structure matters later when you need to audit or troubleshoot the flow. If your request depends on controlled access and richer business logic, Dataverse may be the better long-term option.

2. List the fields you actually need

Approval forms often become cluttered because teams collect everything they might need instead of what approvers need to decide. Keep the request lean.

A typical request should include:

• Request title or summary
• Requester name and email
• Business justification
• Amount, risk level, or category if relevant
• Attachment or link to supporting document
• Requested completion date
• Department or cost center if routing depends on it

Every extra field increases friction and maintenance. Only ask for data that affects routing, approval, or compliance.

3. Map the approval path before building

Draw the workflow in plain language first. A short outline is enough:

1. User submits request.
2. Flow validates required fields.
3. Manager receives first approval request.
4. If approved and amount exceeds threshold, finance receives second approval.
5. If fully approved, record status changes to Approved and requester is notified.
6. If rejected at any stage, record status changes to Rejected with comments.

Also decide these practical rules early:

• Is it a single approver, everyone must approve, or the first response wins?
• Can someone delegate approval?
• What happens if nobody responds?
• Can the requester cancel the request?
• Do you need a resubmission path?

These decisions shape the flow more than the UI does.

4. Build the data layer first

Before you add any approval action, create or confirm the place where the request lives. For many Microsoft 365 approval automation scenarios, this is a SharePoint list with columns such as:

• Request ID
• Title
• Requester
• Status
• Current approver
• Approval comments
• Submitted date
• Decision date
• Category
• Link to source document

This record becomes the source of truth. It lets users check status without searching old emails and gives admins a simple audit trail. If your workflow involves document review, pair the list with a SharePoint document library and store the item link in the request record. If SharePoint permissions are part of the process, it helps to understand inheritance and access design before you automate around it; the site’s SharePoint permissions guide is a useful companion.

5. Add the approval action

In Power Automate, use the built-in approvals capability to send the request to the right person or people. Focus on these content choices:

• A clear title that tells approvers what they are approving
• A concise description with the decision context
• A stable link back to the request record or document
• Requester details so the approver knows who initiated it
• Any due date or expected response time

Keep the description readable. Approvers should not need to open five systems just to understand the request.

If you are deciding between a single-stage and multi-stage process, start simple. One approval step with clear branching is better than a complex chain that people bypass with side emails and chat messages.

6. Branch for every realistic outcome

Many failed flows handle only “approved” and “rejected.” In practice, you should plan for at least four outcomes:

• Approved: Update the record, notify the requester, and trigger downstream work.
• Rejected: Record comments, notify the requester, and stop or return for revision.
• No response or timeout: Escalate, remind, or mark as pending review.
• Error: Capture the failure in a log or admin notification path.

This is where a Power Automate tutorial often becomes too abstract. Real approvals need operational paths, not just happy paths. If a manager is on leave, what happens? If the item was deleted after submission, what happens? If the requester edits a document mid-review, do you restart the process or continue with the original version?

7. Notify people in the channels they already use

Email is still common, but it should not be your only notification method. Teams messages, adaptive cards, SharePoint status columns, or task creation may be more visible depending on the team.

Use notifications sparingly and purposefully:

• Notify the requester when the process starts.
• Notify approvers when action is required.
• Send reminders only when they help prevent delays.
• Notify the requester again on final decision.
• Alert admins only on exceptions, failures, or escalations.

If your organization relies heavily on Teams, review governance before adding automated posts broadly. This helps avoid noisy channels and unclear ownership. For related planning, see Teams Admin Center best practices.

8. Add a status model users can understand

Statuses should be plain and limited. Avoid creating a long list of nearly identical values. In most approval flow Microsoft scenarios, these are enough:

• Draft
• Submitted
• Pending Approval
• Approved
• Rejected
• Cancelled
• Error

Clear statuses reduce support questions and make reports easier later in Power BI or list views.

9. Test with real examples, not sample text

Build a short test plan using realistic submissions:

• A standard request that should be approved
• A request that should be rejected
• A request with a missing field
• A request that triggers a second approval
• A request submitted by someone with unusual permissions

Testing with real scenarios reveals issues that templates hide, especially around links, permissions, and notification wording.

Tools and handoffs

The strongest Microsoft 365 approval automation solutions do not live inside Power Automate alone. They rely on clean handoffs between the apps people already use.

Power Automate

This is the orchestration layer. It connects the trigger, business logic, approval action, and notifications. Keep the flow readable by using clear names for actions and scopes. Group related steps so future admins can understand the design quickly.

SharePoint

SharePoint is often the best home for request lists, supporting documents, and lightweight dashboards. It works well when you need transparency for business users and straightforward list-based reporting. It also fits many document approval cases naturally.

Microsoft Forms

Forms is useful for simple intake, especially for non-technical users. It is fast to deploy, but it is less flexible than a structured app or customized SharePoint form. Use it when the request process is stable and uncomplicated.

Teams

Teams can be the front door for approvals through chat notifications, channel visibility, and embedded tabs. It works best when teams already handle work in a shared channel context and need lightweight awareness rather than deep case management.

Outlook

Outlook remains important for formal decision requests and final summaries. Many approvers still work from email, especially executives and finance stakeholders. Include links back to the source item so email does not become the only record.

Power BI

Once the process is stable, reporting becomes valuable. You can measure approval volume, average completion time, rejection reasons, and bottlenecks by department or category. That turns a simple approval flow into a process improvement tool. If you plan to visualize this data later, define your request fields and statuses consistently from the beginning.

Admin handoffs and ownership

Every flow should have a named owner and a backup owner. Document:

• Who maintains the flow
• Who updates approver lists or routing rules
• Who responds when the flow fails
• Where logs and request records are stored
• How changes are tested before release

If you are building in a new tenant or standardizing processes, it also helps to align with your broader setup and governance model. For tenant-level planning, see the Microsoft 365 Admin Center setup checklist.

Quality checks

Before you call an approval workflow finished, review it like an admin, not just a builder. The goal is not merely to make it run once. The goal is to make it understandable, supportable, and safe.

Check the approval logic

• Does the right person receive the request every time?
• Are thresholds and conditions documented clearly?
• Can the flow handle manager changes, shared mailboxes, or missing profile data?
• Have you defined what happens when someone is unavailable?

Check the data record

• Can you see request status without opening flow run history?
• Are comments stored in a usable place?
• Is there a unique ID you can search?
• Can support staff answer “where is my request?” quickly?

Check permissions

• Can requesters view only what they should?
• Can approvers access supporting documents?
• Does the flow account have only the permissions it needs?
• Will a change in SharePoint permissions break the process?

This matters especially for document-centric workflows. If users can approve an item but not open the file, the process will fail in practice even if the flow itself succeeds.

Check notifications

• Are subjects and message bodies specific?
• Do they include action links that work?
• Are reminders reasonable rather than excessive?
• Do rejection notices include comments or next steps?

Check error handling

• Do failures trigger an admin alert?
• Can partial updates leave the request in a misleading state?
• Do you log enough detail to troubleshoot without exposing sensitive data?
• Have you tested connector interruptions or invalid inputs?

Check maintainability

• Are actions named clearly?
• Are variables and conditions easy to follow?
• Is there a short design note or runbook?
• Could another admin take over without rebuilding the flow from scratch?

That last point is easy to overlook. Approval workflows often outlive the person who originally built them.

When to revisit

A good approval flow is not a one-time project. Revisit it whenever the process, people, or Microsoft 365 environment changes. The practical review schedule is simple: check the flow after any business rule change, after major connector or UI changes, and on a regular cadence such as quarterly for critical workflows.

Here are the most common update triggers:

• Approvers or org structure changed: managers move, departments merge, and routing logic becomes outdated.
• New compliance or retention requirements: request records may need additional metadata or different storage.
• Users complain about delays: this often means reminders, escalation, or approval sequencing needs adjustment.
• The form has grown too large: split fields into phases or remove fields that are never used.
• Reporting is weak: add clearer statuses, categories, and timestamps.
• Connector behavior or app experience changes: test links, adaptive cards, and notifications after platform updates.
• Permissions changed in SharePoint or Teams: revalidate access to source documents and request records.

When you revisit the flow, do not start by editing actions at random. Use this short checklist instead:

1. Review the actual business rule and confirm it still matches reality.
2. Check the trigger, data fields, and approver mapping.
3. Test approved, rejected, and timeout paths.
4. Verify links, permissions, and notifications.
5. Update any documentation and ownership notes.

If you want this workflow to stay useful over time, treat it like a product, not a quick fix. Start with one high-value approval process, keep the statuses and routing logic clean, and improve based on support questions and real delays. That approach makes Power Automate approvals far more durable than copying a template and hoping it holds.

For teams building a broader Microsoft 365 process foundation, it can also help to review adjacent admin topics such as tenant setup, governance, and collaboration controls. Related resources on microsofts.top include the Microsoft 365 business pricing comparison for planning decisions and the Exchange Online mail flow troubleshooting guide if your approval notifications rely heavily on email delivery.