Course contents
Practitioner · Course 2: ERP, PLM and Business-System Roles · Lesson 3 of 5

Where purchase orders, inventory, invoices and financial transactions should be controlled

Level: PractitionerTime: 45 minutesOrder used: A and B (reference transaction examples)Tool: Business-system role map
For anyone running a domestic Make to Stock replenishment programme who needs to know where purchase orders, inventory, invoices and financial postings should be controlled. Order A and Order B jeans are used only as approved reference transaction examples; the main workplace case is Cedar & Co.
BusinessCedar & Co.
ModelDomestic Make to Stock
Network12 shops
SupplierDelta Garments, 60-day open account
Reference transaction A15,000 T-shirts at USD 3.20 per piece
Reference transaction B3,000 jeans at USD 9.80 per piece
02Opening

This page teaches Cedar & Co.'s own team where purchase orders, inventory, invoices and financial transactions should be controlled on a domestic Make to Stock replenishment programme

Cedar & Co. runs 12 shops from a standing forecast, replenishing stock rather than waiting for a single confirmed export order. Every week, someone raises a replenishment order to Delta Garments, receives goods into a warehouse, moves stock to shops, and eventually pays an invoice. Each of those steps creates a commercial or financial fact: a quantity ordered, a quantity received, a stock balance, an amount invoiced, an amount paid.

These facts belong together in one system, usually the ERP system, because they are commercial and financial by nature — the same category of fact this course separated from technical specifications and task status in the earlier lessons. This lesson shows you where a purchase order, an inventory movement, an invoice and a payment posting should be controlled on a domestic Make to Stock programme, and why letting any of them drift into an uncontrolled spreadsheet creates the same version conflicts this course has already warned against.

03Before you start

What you need, and what this lesson does not cover

You need: the earlier lessons' distinction between what an ERP system, a PLM system and a workflow tool are each meant to control, and the idea that a specification needs one controlled home.

By the end of this lesson you can:

  • name which commercial and financial facts belong in the ERP system on a Make to Stock programme;
  • separate a purchase order from the inventory movement and invoice it later produces;
  • recognise when a stock or financial figure has drifted from its controlled source;
  • avoid reconciling stock or payments from a private spreadsheet instead of the ERP system;
  • apply the same discipline whether the business is export Make to Order or domestic Make to Stock.

Not covered here: accounting standards, tax rules, or configuring a specific ERP product's finance module. This lesson stays vendor-neutral and focuses on the business rule.

04Key terms

Words you will meet in this lesson

TermMeaning
Purchase orderA commercial document recording a confirmed quantity, price and delivery expectation for goods being bought.
Inventory movementA recorded change in stock quantity or location, such as a receipt, a transfer or a sale.
InvoiceA commercial document recording the amount owed for goods or services delivered.
Financial postingAn entry in the accounting records reflecting a commercial event, such as a payment or an accrued liability.
Open accountA payment arrangement where the buyer pays the supplier within an agreed period after invoicing, rather than at the time of shipment.
ReconciliationComparing two records of the same fact, such as a stock count and a system balance, to confirm they agree.
05Teaching
The rule

Purchase orders, inventory movements, invoices and financial postings are commercial and financial facts, and belong in the ERP system, not in a parallel spreadsheet

Every replenishment, receipt, stock transfer, sale, invoice and payment is a commercial or financial event. Course 2's first lesson already established that this category of fact is the ERP system's core job. A Make to Stock programme does not change that rule; it only means the same kind of transaction repeats often, sometimes weekly, rather than once per confirmed export order.

A stock balance, an outstanding invoice amount or a payment due date should always be read from the ERP system's current record. A parallel spreadsheet tracking "what we think is in stock" or "what we think we owe" is exactly the kind of convenience copy that drifts from the system of record over time.

Replenishment orderGoods receiptStock movementInvoice / paymentOne ERP system holds current stock balance and outstanding amount
Every commercial and financial event on a replenishment programme feeds the same ERP system, which is the only reliable place to read a current stock or payment figure.
What you meet in real life

The same commercial and financial control applies across markets, but the payment terms and transaction frequency differ

What can differThe shapes you will meetWhy it matters
Export, Make to Order, letter of creditA single confirmed order, invoiced once near shipment, paid through a letter of credit at the agreed milestone.Fewer, larger transactions; each one still needs its own controlled purchase order, invoice and payment record.
Domestic, Make to Stock, open accountFrequent replenishment orders, invoiced regularly, paid on agreed terms such as 60 days after invoicing.More frequent transactions increase the risk of an uncontrolled spreadsheet creeping in "to keep track," which is exactly what this lesson warns against.
Stock held across multiple shopsInventory movements include transfers between shops as well as receipts from the supplier and sales to customers.Every movement is still a commercial fact belonging in the ERP system, whether it is a receipt, a transfer or a sale.
An agent or trading company in the commercial chainA trading company's own purchase order to the factory and its own resale invoice to a retailer are two separate, linked commercial transactions.Each party's own ERP system controls its own purchase orders and invoices; one company's system is not another company's system of record.
Different product familiesSocks and hosiery, knit-to-garment, terry towels and home-textiles replenishment orders use the same purchase order, inventory and invoice structure, with different product fields.The commercial and financial control need is the same across product families; only the product detail on each transaction changes.
The case we follow

Cedar & Co. controls every replenishment, receipt, stock movement and invoice in its ERP system, not in a shop manager's private spreadsheet

Cedar & Co. runs its 12 shops on a domestic Make to Stock basis, buying from Delta Garments on 60-day open account terms. When a shop manager sees stock running low, a replenishment order is raised in the ERP system, not agreed informally over a phone call. When goods arrive at the warehouse, a goods receipt is recorded in the same system, updating the stock balance. When stock moves to a shop, that movement is recorded too. When Delta Garments issues an invoice, it is matched against the receipt in the ERP system, and the payment due date is tracked from the invoice date under the 60-day term.

A shop manager who instead keeps a personal notebook of "what I think we have" is not creating an alternative system of record; that notebook can drift from the ERP system's balance within days, especially across 12 shops each doing this differently.

The worked number

Order A and Order B jeans show that a purchase order's value is a confirmed commercial fact, not something to be estimated from memory

Two fixed academy transactions illustrate the scale of a confirmed purchase order, used here only as reference figures, not as Cedar & Co.'s own orders. Order A is 15,000 T-shirts at USD 3.20 per piece. Order B jeans is 3,000 jeans at USD 9.80 per piece.

Order A total value: 15,000 × 3.20 USD = USD 48,000
Order B jeans total value: 3,000 × 9.80 USD = USD 29,400

Whatever the actual size of one of Cedar & Co.'s own replenishment orders, the same principle applies: the confirmed quantity and price on the purchase order are commercial facts controlled in the ERP system, the goods receipt that follows is a separate inventory fact, and the invoice that follows that is a separate financial fact. None of the three should be estimated or reconstructed from a shop manager's memory when the ERP system already holds the confirmed figures.

GOOD: read from the ERP systemConfirmed PO quantity and priceReceipt updates stock balanceInvoice matched, payment trackedBAD: personal notebook estimateQuantity recalled from memoryStock guessed, not counted from receiptsPayment due date uncertain
A confirmed purchase order, receipt and invoice are facts, not estimates. Reconstructing them from memory recreates exactly the version conflict this course has warned against.
The method

Control a Make to Stock replenishment's commercial and financial facts in four steps

  1. Raise every replenishment order in the ERP system with its confirmed quantity, price and expected delivery, not through an informal phone call or message.
  2. Record every goods receipt and stock movement in the same system as it happens, so the stock balance always reflects reality.
  3. Match every invoice against its receipt in the ERP system before approving it for payment.
  4. Track every payment due date from the invoice date and the agreed term, reading the outstanding balance from the ERP system, not from memory.
The trap

A common mistake is trusting a shop's own stock count over the ERP system's balance without first checking why they disagree

When a physical stock count in a shop does not match the ERP system's recorded balance, it is tempting to simply trust the physical count and adjust the system to match it. But the disagreement itself is useful information: it may reveal an unrecorded transfer, a receipt entered against the wrong shop, or a sale that was never recorded. Overwriting the system balance without investigating the gap treats the symptom without fixing the underlying entry error, and the same mismatch is likely to recur.

06In plain words

Think of every replenishment, delivery, stock move and invoice as money and goods changing hands, and think of the ERP system as the one ledger that should record every one of those changes. A shop manager's private notebook or a spreadsheet built "to keep an eye on things" cannot replace that ledger; it can only fall out of step with it.

When a stock count does not match what the system says, do not just change the system to agree with the count. Find out why they disagree first, fix the real cause, and then let the system be the answer everyone trusts again.

07Quick check
  • Purchase orders, inventory movements, invoices and financial postings are commercial and financial facts, controlled in the ERP system.
  • A Make to Stock programme repeats these transactions frequently; it does not change which system controls them.
  • A stock or payment figure should always be read from the ERP system's current record, not from a private notebook or spreadsheet.
  • Every invoice should be matched against its goods receipt before payment is approved.
  • A stock-count disagreement is information to investigate, not something to silently overwrite.
  • The same commercial and financial control applies across export Make to Order and domestic Make to Stock business.
08Workplace scenario

A shop manager's physical stock count is 40 pieces lower than the ERP system's recorded balance for a fast-moving style, and someone suggests simply adjusting the system to match the count

At one of Cedar & Co.'s shops, a physical stock count shows 40 fewer pieces of a popular T-shirt style than the ERP system's recorded balance. A team member suggests adjusting the system balance down to match the physical count immediately, so the shop's records "look correct" before the next replenishment order is calculated.

What should happen before the system balance is adjusted? Decide before opening the answer.

Show decision

Investigate the gap between the physical count and the system balance before adjusting anything, since the cause may affect more than this one shop.

1. Check recent stock movements for this style — transfers in or out, receipts, and recorded sales — for any entry that looks missing, duplicated or applied to the wrong shop. 2. Check whether a transfer to or from another shop was received but never recorded, or recorded against the wrong location. 3. Check whether any sales were made without being recorded in the system, such as a manual sale not entered promptly. 4. Only after the cause is identified or ruled out, adjust the system balance to match the verified physical count, and record the reason for the adjustment.

Adjusting the system balance first and investigating later, if at all, risks hiding a real process gap — an unrecorded transfer or sale — that will keep producing the same mismatch at this or another shop.

09What it costs

An uninvestigated stock mismatch can distort the next replenishment order and the payment it eventually triggers

Order A's and Order B jeans's confirmed values show the scale of a single confirmed commercial transaction:

Order A: 15,000 × 3.20 USD = USD 48,000
Order B jeans: 3,000 × 9.80 USD = USD 29,400

If a shop's stock balance is silently adjusted without finding the real cause of a 40-piece gap, the next replenishment order calculated from that balance will be wrong in the same direction, and so will the resulting invoice and payment. A recurring, uninvestigated gap across 12 shops can misstate stock and payment obligations by far more than the value of one replenishment order, while the underlying process error — a missed transfer or an unrecorded sale — continues undetected.

10Working template

Business-system role map: record which commercial and financial facts are controlled, and where

Use the T17-C02 Business-system role map workbook. For each commercial or financial fact on a replenishment programme, record which system controls it, how a mismatch should be investigated, and who is responsible for correcting the underlying cause rather than only the number. Start with a replenishment cycle you know, then compare it with Order A and Order B jeans as reference transactions.

[Download the Business-system role map workbook](../../templates/T17-C02-business-system-role-map.xlsx)

Download the Business-system role map (Excel)

11Check yourself

1. On Cedar & Co.'s domestic Make to Stock programme, which system should control the current stock balance for a shop?

2. A physical stock count is lower than the ERP system's balance. What should happen first?

3. For Order B jeans, at 3,000 pieces and USD 9.80 per piece, which figure is the confirmed commercial fact that belongs in the ERP system's purchase order record?

12Glossary
ENARFRTRMeaning
Purchase orderأمر الشراء (طلبية الشراء)Bon de commandeSatın alma siparişiA document from a buyer confirming quantity, price and delivery date, which commits the buyer to pay for the goods it orders.
Inventory movementحركة المخزونMouvement de stockEnvanter hareketiA recorded change in stock quantity or location, such as a receipt, a transfer or a sale.
InvoiceالفاتورةFactureFaturaA commercial document recording the amount owed for goods or services delivered.
Financial postingالقيد الماليÉcriture comptableFinansal kayıtAn entry in the accounting records reflecting a commercial event, such as a payment or an accrued liability.
Open accountحساب مفتوحCompte ouvertAçık hesapA payment method where the buyer pays the factory an agreed number of days after delivery, with no bank guarantee in between.
ReconciliationالتسويةRapprochementMutabakatComparing two records of the same fact, such as a stock count and a system balance, to confirm they agree.
13Next

Lesson 2.4: Passing information between systems without duplicate entry or conflicting versions

Next you will learn how a sourcing agent hands off information between a factory's systems and a buyer's systems without creating duplicate entry or conflicting versions. Back to the course map

14Ladder

RecognizeName which commercial and financial facts belong in the ERP system on a Make to Stock programme.
ConnectSee how a purchase order, receipt and invoice form a linked but distinct commercial record.
CompareSeparate a genuine process error from a figure that only needs adjusting.
DecideChoose what to investigate before adjusting a stock or payment figure that disagrees with the system.