Case Study · Document-to-Finance Automation

From business documents to automated finance operations

How DocPro and FinSuite connect document understanding, validation, matching, approvals and enterprise-system workflows into one connected finance process.

Hands typing on a laptop showing a finance dashboard of revenue, fees and growth figures

Case study 01 · The challenge

What document to finance automation has to replace

A supplier invoice passes through several hands and three systems before anyone can say whether it should be paid. Most of those hands type. One or two decide. Document to finance automation keeps the deciding and removes the typing, and this case study follows the whole chain, from the PDF to the payment status.

This page describes a representative workflow rather than a customer deployment. These case studies illustrate PTAS AI product and solution architectures and representative business workflows. They are not presented as customer deployments or independently measured customer results.

Today

Has this been approved?

A supplier calls about an invoice from six weeks ago. The clerk finds the PDF in a shared mailbox, the approval in a screenshot and the posting nowhere, because it has not been made yet.

Today

The GRN says 180, the invoice says 200

Stores booked a short delivery and recorded it. The invoice bills the full order. Nobody puts the two side by side until the supplier's statement arrives with a balance on it.

Today

The accrual is an estimate

At close, invoices that have arrived but not been posted sit in inboxes and desk trays. Finance accrues a round number for them and corrects it the following month.

Underneath

Three systems, one moving part

The purchase order is in the ERP, the goods receipt is in a stores register and the invoice is in an inbox. The invoice is the only one that moves between them, and it moves by hand.

Underneath

The checks live in people's heads

Whether a supplier is still active, whether its bank account changed last month, whether the GST rate fits the HSN: an experienced clerk knows. The workflow does not, so the check depends on who is at their desk.

Underneath

The trail is an email thread

When an auditor asks who approved an invoice and on what basis, the answer is a forwarded email with the word ok in it. The amount band and the reason were never written down.

The PTAS AI approach

Two products, one record

DocPro understands documents. FinSuite executes finance workflows. The invoice becomes a record in the first, is tested and routed in the second, and reaches the ERP only after every check has run.

  1. 01

    Understand

    DocPro classifies the document, then its Invoice Agent reads it into typed fields: supplier and GSTIN, number and date, PO reference, every line with its HSN, quantity, rate and tax, and the totals. Each field carries a confidence score.

    One PDF becomes one record, scored

  2. 02

    Decide

    FinSuite runs your rules on that record: the vendor against your master and its bank details against what you hold, the invoice against everything already received, the lines against the PO and the GRN within your tolerances, the tax type against the place of supply, the amount against your approval bands. Where a rule cannot settle it, the item is marked for a person with the reason stated.

    Rules run before anyone reads it

  3. 03

    Act

    A clean invoice is routed to the approver your policy names, posted into the ERP with the document and its evidence attached, and scheduled for payment on the supplier's terms. Nothing is re-keyed between DocPro, FinSuite and the ERP.

    Approved, posted, scheduled

  4. 04

    Verify

    The ERP document number comes back to the record and payment status comes back from the bank file. Every decision on the way, automated or human, sits on the audit trail with what it was based on.

    One record, from PDF to payment status

The figure is the same idea seen from the invoice's side: five narrow agents, each adding what it established before passing the record on. The references and amounts in it are illustrative.

One invoice, five agents, no handover meeting · Illustrative example

AgentWhat it addedState
Invoice Agent14 lines, tax, vendorExtracted
Matching AgentPO-88214, GRN-40117Matched
Compliance AgentHSN rate, GSTIN activeCleared
Approval AgentBand, approver, timestampApproved
Posting AgentERP document 4500091827Posted
One record Each agent owns a narrow job. The invoice carries everything the previous one established.

Narrow jobs are deliberate. An agent that does one thing can be tested, measured and replaced; one that does everything cannot.

One record, passed along

Each agent adds what it established and hands the invoice on. Nothing is entered twice.

The products divide the work

DocPro owns the reading. FinSuite owns the rules, the routing, the posting and the trail.

Clean invoices need nobody

An invoice that passes every check goes through all five agents without a person opening it.

The workflow

Twelve steps from invoice to verified outcome

This is invoice to payment automation in full. The steps named DocPro and FinSuite are the products. Everything between them is a check, a rule or a person, and every step writes to the same record.

  1. 01

    Invoice

  2. 02

    DocPro

  3. 03

    AI understanding

  4. 04

    Confidence

  5. 05

    Validation

  6. 06

    PO / GRN / invoice match

  7. 07

    Business rules

  8. 08

    Human review

  9. 09

    Approval

  10. 10

    FinSuite

  11. 11

    ERP

  12. 12

    Verified outcome

DocPro understands → FinSuite executes → Your ERP completes

How the two products divide the work

Step by step

What each step does, and who owns it

Read down the right-hand column and the division is plain. DocPro owns the reading. FinSuite owns everything from validation to the trail. Your people own the decisions a rule could not make, and nothing else.

StepOwned by
01 Invoice. A supplier invoice arrives by email, through a portal, as a scan or over the API. It is logged the moment it lands, so its age counts from arrival rather than from the day someone found it. Capture, by DocPro
02 DocPro. The document is classified before anything is read: invoice, credit note, statement or something else. An invoice goes to the Invoice Agent. A statement is not forced through the wrong pipeline. DocPro Invoice Agent
03 AI understanding. The agent reads the header, every line and the tax block into typed fields. A forty-line invoice with a stamp across the totals is still one record at the end, with the totals checked against the lines. DocPro Invoice Agent
04 Confidence. Each field carries a score. A field below the threshold you set is marked for a person, together with the region of the page it was read from. The others pass. Field-level confidence, DocPro
05 Validation. The supplier is matched to your vendor master, the GSTIN is checked for format and status, the bank details are compared with what you hold, and the invoice is tested against everything already received, including near duplicates. FinSuite Vendor Management
06 PO / GRN / invoice match. Lines are matched to the purchase order and, for goods, to the GRN: a two-way match for services, a three-way match for goods, with unit conversions and the tolerances you set. A short delivery is matched to what was received. FinSuite AP Automation
07 Business rules. Your rules decide the route: the tax type against the place of supply, the IRN where the supplier must issue an e-invoice, the approval band for the amount, the tolerance for a variance, the treatment of an invoice with no PO. You configure them, and each change is recorded. FinSuite GST Compliance and AP rules
08 Human review. Only what a rule could not settle reaches a person: a low-confidence field, a variance outside tolerance, a changed bank account. The reviewer sees the value, the score and the evidence, decides, and the decision is written down. Human-in-the-loop review
09 Approval. The invoice is routed by band to the approver your policy names. Delegation covers absence and escalation covers delay. Approval from a phone counts. Approval without a recorded reason does not, and the workflow refuses it. Your approver
10 FinSuite. The posting is assembled: account, cost centre, tax lines and your dimensions, with the invoice and its evidence attached. Payment is scheduled on the supplier's terms, with any early payment discount visible before it lapses. FinSuite AP Automation
11 ERP. The entry posts into your ERP through native, API, file or custom integration, and the ERP document number comes back to the record. Payment status returns from the bank file and is written against the invoice. FinSuite Integrations
12 Verified outcome. The record shows what was read, which rules ran, who decided, what posted and whether it was paid. It answers the supplier's call and the auditor's question from the same place. Audit trail, FinSuite

Human review and approval

Where a person comes in, and what they see

Review is a control, not a failure state. A person is asked about a field DocPro could not read with confidence, a match outside tolerance or an invoice that crossed an approval band. Everything else passes without them.

Invoice ₹ 2,70,220 — the route it took · Illustrative example

Before routingPolicy
Duplicate checkNo prior submissionPassed
Terms and taxNet 30, GST 18% as agreedPassed
Three-way matchPO-88214 · GRN-40117Matched
RoutingYour thresholds
Band₹ 50,000 to ₹ 5,00,000Manager
Sent toA. Nair · 14:02Notified
DelegationOn leave — cover to S. IyerApplied
Approved14:20 · 18 minutesApproved

Nobody shared a login and nobody chased by email. The delegation, the timestamp and the reason are all on the entry.

An approver in this chain does not read invoices. They answer the question a rule could not: whether a variance is acceptable, whether a new bank account is genuine, whether an invoice with no PO belongs to their cost centre. The question arrives with the evidence, delegation covers the days they are away, and escalation covers the days they are slow. In the figure, the cover approver, the time and the reason are all on the entry, which is what an auditor asks for six months later. How to design review so that it shrinks over time is the subject of the human-in-the-loop guide.

Products used

DocPro and FinSuite, as used in this case study

DocPro can run on its own, which is case study 02. FinSuite can take structured invoices from another source. Together, nothing is re-keyed between understanding and posting, and the audit trail runs unbroken from the PDF to the payment.

PTAS AI / Product

DocPro

Agentic Document Intelligence

InvoiceClassifyReadScoreHand over

DocPro owns the first four steps of the chain. It logs the invoice, classifies it, reads it into typed fields and scores each one, then hands a structured record to FinSuite.

  • Invoice Agent for the header, the lines and the tax block
  • Field-level confidence on every value
  • Human review only for the fields below your threshold
  • Structured JSON to FinSuite, the API or a workflow
PTAS AI / Product

FinSuite

AI Finance Operations

ValidateMatchApprovePostAudit

FinSuite owns the chain from validation to the audit trail. It runs your rules, holds the review queue, routes the approval, posts the entry and reads payment status back.

  • Vendor, GSTIN and duplicate validation
  • Two-way and three-way match with your tolerances
  • Approval by band, with delegation and escalation
  • ERP posting and payment status written back

FinSuite posts to the ERP through one of four methods: native integration, API integration, file or flat-file integration, or custom integration. SAP, Oracle, Microsoft Dynamics, NetSuite, Tally and Zoho Books are planning examples; which method applies to your instance, and the scope of field mapping, is confirmed during assessment rather than assumed.

How postings and status flow

Controls

What stops a wrong payment

Paying faster is only safe if the checks moved earlier. In this workflow the controls are steps in the chain rather than a review after the fact, and each one leaves a record. The FinSuite security page has the detail.

Thresholds you set

The confidence threshold per field, the match tolerance and the approval bands are yours. A change to any of them is a recorded change, with who made it and when.

Segregation of duties

The person who corrects a field cannot approve the invoice, and the approver cannot release the payment. The workflow enforces the roles; it does not assume them.

A complete audit trail

What was read, which rules ran, who decided what, what posted and the document itself, kept per invoice and exportable for internal and statutory audit.

Deployment and access

Role-based access, encryption and audit trails, with ISO/IEC 27001-aligned security practices. Private deployment options, and on-premise or air-gapped deployment, where supported.

What we would not automate here: the decision on a disputed invoice, or an approval above the band you set. Both wait for a person, and the record shows that they waited.

Next step

How to test this on your own invoices

A clean sample proves little. Last month's queue as it actually arrived, with the scans, the duplicates and the invoices nobody raised a PO for, is the test worth running.

Going live is typically four to twelve weeks for a single workflow; an indicative range that varies with document variety, systems, approval design and deployment. Expect the early weeks to go on your documents and your approval design as they are today rather than as the policy describes them. The workflow on this page is representative; it is not presented as a customer deployment or an independently measured result.

Next step

Find the step in your chain worth automating first

Tell us how a supplier invoice moves through your team today, from the inbox to the payment run. We will point to which of the twelve steps to start with, and which to leave with a person.