Turning on and tuning the Business Central payables agent

If your team is live on Microsoft Dynamics 365 Business Central (Microsoft's cloud ERP, or enterprise resource planning, system) and someone still keys vendor invoices one PDF at a time, the Payables Agent can take most of that typing off their plate. This guide is for the accounting or operations lead who wants to switch it on properly. By the end, you'll have the agent watching an invoice mailbox, drafting purchase invoices for a person to review, matching them against purchase orders, and running inside guardrails you control.

The Payables Agent reads incoming invoice PDFs with Azure Document Intelligence (Microsoft's document-reading service), pulls out the vendor, amounts, dates, and lines, and drafts a purchase invoice. A human still reviews and posts. You're deleting the data entry, not handing over the checkbook.

Before you start

You'll want a few things in place first:

• A Business Central environment on a recent version (the Payables Agent is generally available as of the 2026 releases).
• An administrator who can reach both the Business Central Admin Center and the Copilot and agent capabilities page.
• A Microsoft 365 mailbox (a regular user mailbox or, better, a shared mailbox) where vendors already send invoice PDFs. It has to live in your own tenant.
• Billing set up for agent capabilities. Agents consume Microsoft Copilot Studio messages, which are billed through consumption-based billing in the Admin Center. Confirm this is configured before you activate, or the agent won't run.
• Permission to assign the agent a user account, since the agent acts under its own identity.

Step 1: Set up the invoice mailbox

Decide which mailbox the agent will monitor. A dedicated shared mailbox (something like invoices@yourcompany.com) is cleaner than a personal inbox, because it survives staff changes and keeps invoice traffic in one place.

1. In the Microsoft 365 admin center, confirm the mailbox exists and is a Microsoft 365 type.
2. Ask vendors to send invoices there as PDF attachments, or set up forwarding from wherever invoices land today.
3. Make sure the account the agent uses has permission to read that mailbox.

Step 2: Turn on agent billing in the Admin Center

1. Open the Business Central Admin Center.
2. Go to the environment you're configuring.
3. Set up the environment for billing agent capabilities so Copilot Studio message consumption is allowed. Without this, activation fails or the agent sits idle.

Step 3: Enable the Payables Agent capability

1. In Business Central, open the Copilot and agent capabilities page (search for "Copilot and agent capabilities" in Tell Me).
2. Find the Payables Agent in the list (it appears under generally available features).
3. Turn it on.

Step 4: Activate and point the agent at the mailbox

1. In the navigation bar at the upper right of the role center, select Payables Agent, then Activate.
2. On the Configure the Payables Agent wizard, turn on the Monitor incoming information toggle.
3. Select the Mailbox check box, then set the Mailbox field to the email account you set up in Step 1.
4. Turn on the Active toggle.
5. Select Update to finish.

The agent now watches that mailbox. When an invoice arrives, it reads the PDF, identifies the vendor, suggests accounts based on your history and policies, and drafts a purchase invoice into a queue.

Step 5: Work the review-and-approve queue

The agent drafts, a person posts. Build the habit early:

1. Open the list of agent-drafted purchase invoices.
2. For each draft, check the vendor, total, dates, and line detail against the original PDF.
3. Fix anything that looks off (a miscoded account, a wrong dimension).
4. Post the invoice yourself, or route it into your normal approval workflow.

Nothing posts without a human. That's the design, and it's worth protecting.

Step 6: Turn on purchase-order matching

The 2026 release added PO matching, so the agent can line an invoice up against an open purchase order instead of making someone eyeball it.

1. Confirm your purchase orders are being entered in Business Central (matching only works if there's a PO to match against).
2. Enable purchase-order matching in the agent's configuration.
3. When an invoice comes in, the agent finds the related PO, matches lines, and flags discrepancies (a price that moved, a quantity that doesn't line up) for the reviewer.

Step 7: Set guardrails and monitoring

1. Keep a human approval step between "drafted" and "posted." Don't auto-post.
2. Decide a confidence threshold habit: if the agent's draft looks uncertain or the PDF was messy, the reviewer slows down rather than rubber-stamping.
3. Check the agent's activity periodically so you catch a vendor whose invoice format trips it up.
4. Limit who can change the agent's configuration.

Verify it works

Send a test invoice PDF to the monitored mailbox from a known vendor. Within a short window, you should see a drafted purchase invoice appear in the queue with the vendor, amounts, and lines populated. Open it, compare it to the PDF, and confirm the account suggestions make sense. If the draft never appears, recheck mailbox permissions (Step 1) and that billing is enabled (Step 2).

What to do next

Once the agent is steady on a few vendors, widen it to the rest of your invoice volume and fold the review step into your existing approval flow. The Payables Agent is also a good prompt to ask a broader question: what else does Business Central already do that you're paying a third-party tool to handle? Bank reconciliation, recurring journals, and document handling are common answers. If you'd like a second set of eyes on what's switched on in your environment, we're glad to take a look.