Power Automate Approval Flows

We've standardized on Power Automate for approval workflows across the organization. Purchase requests, time-off approvals, customer credit applications - anything that needs someone to say yes or no before proceeding. Here's the pattern that's working for us.

Why Power Automate for Approvals

Before Power Automate, approvals happened via email chains, spreadsheets, or walking to someone's desk. No audit trail, no visibility into pending items, no escalation when approvers went on vacation. Classic shadow process problems.

Power Automate's approval connector handles the basics out of the box: send approval request, wait for response, route based on outcome. The approver gets an actionable notification in Teams, Outlook, or the Power Automate mobile app. Response is captured with timestamp and comments. Done.

The Pattern We Use

Start trigger: usually a new item in a SharePoint list or Dataverse table. Someone submits a request, the flow picks it up.

Data enrichment: pull in additional context the approver needs. If it's a purchase request, fetch the requester's department, budget info, and recent spend. Don't make the approver hunt for information.

Approval routing: simple cases go to a single approver. Complex cases use sequential approvals (manager then director) or parallel approvals (finance AND operations must both approve). The Approval connector supports all these patterns.

Outcome handling: on approval, trigger the next process - create the PO, update the status, notify the requester. On rejection, capture the reason and notify appropriately. On timeout, escalate or auto-reject depending on business rules.

Logging: write everything to a log table. Who approved what, when, with what comments. This audit trail is gold when questions come up later.

The Timeout Problem

Power Automate flows have a 30-day runtime limit. If an approval sits unanswered for 30 days, the flow fails. This catches people off guard.

Solutions: Set reasonable deadlines with reminder notifications. Build escalation logic that bumps to an alternate approver if the primary doesn't respond within a threshold. For truly long-running approvals (some contracts take months), consider breaking into stages rather than one continuous flow.

Approval Limits and Licensing

Be aware of the request limits in Power Platform licensing. Approvals count against your flow runs and API calls. For high-volume scenarios, make sure your licensing can support the throughput. We had to upgrade our plan when the purchasing team got enthusiastic about automating every small request.

Teams Integration

Approvals surface beautifully in Teams when configured correctly. The approver sees the request right in their Teams activity feed, can review details, and approve/reject without leaving Teams. For organizations that live in Teams, this is where adoption takes off.

We're running about 200 approvals per week through Power Automate now. The finance team says it's saved them hours of email chasing. The audit team says the visibility is transformational. Win-win.