Invoice matching is one of the cleaner fits for an agent. The steps are mostly mechanical. A system can watch the inbox or upload folder, pull the invoice out of a PDF or email, and run a three-way match against the purchase order and the receiving record. If everything lines up within a set tolerance, it codes the entry and posts it straight into the books through the accounting software's own API. Older RPA tools click through a fixed sequence of screen fields and break the moment a vendor changes their invoice layout. An agent reads the document for meaning first, so a new template or a shifted field order doesn't stop it.
The harder part, and the part worth automating well, is what happens when something doesn't match. A duplicate invoice number or a price that's outside tolerance needs a person's eye, not a guess, and so does an invoice from a vendor the system has never seen, or a scan too blurry to read. The right design has the agent hold the entry, write down exactly why it stopped, and route it to whoever approves exceptions, rather than post something uncertain and hope no one notices in March. A script fails silently or crashes; an agent is supposed to know when it's out of its depth. Where to draw that line is really a question about how much a system should decide on its own versus hand back to a person, and we'd set it around your own risk tolerance.
This doesn't fit well when the books are inconsistent today, with no settled chart of accounts or coding rules, because an agent needs something stable to match against before it can run on its own. Tax categorization calls and disputed charges still belong to a human; an agent can flag a disputed line item, not decide who's right. What we'd build is a system that checks for new invoices on a schedule, matches and posts the clean cases, and leaves behind a record of what it flagged and why, closer to an agent that acts on the numbers than a dashboard that only displays them. Once it's running, we keep operating it rather than handing over a tool and walking away.