SCM Purchasing & Suppliers: POs, Purchase Invoices, GRNs & Payables

Purchase order software Pakistan teams evaluate usually starts with “can we raise a PO?”—but the real test is whether ordering, supplier billing, goods receipt, payables, and stock stay linked when volume grows. In Wise Supply Chain, the purchasing module runs on a document chain: supplier → purchase order (optional) → purchase invoice → GRN. This guide walks through each feature so buyers, warehouse staff, and finance read the same numbers.

Supplier master: the foundation of purchasing

Every purchase starts with a supplier record: legal name, contact details, payment terms, tax identifiers, and status (active/inactive). Suppliers feed the supplier ledger and accounts payable reports—so when a purchase invoice is confirmed, the balance you owe is already tied to a named counterparty, not a free-text field on a spreadsheet.

Clean supplier data early: duplicate names and missing tax IDs create reconciliation pain at month-end and slow down purchase return matching later.

Purchase orders: commit before the invoice arrives

When purchase orders are enabled for your installation, you raise a PO against a supplier and target warehouse with line-level products, quantities, unit prices, tax, and discounts. POs move through draft → approved → partially received → received (or cancelled)—giving procurement a committed plan buyers can track before the supplier invoice lands.

Approve POs before sending to suppliers; cancel when an order will not proceed. Received quantities update automatically when linked GRNs are confirmed, so “what we ordered” and “what arrived” never live in separate files.

Purchase invoices: what you owe the supplier

A purchase invoice records the supplier’s bill: line items, tax, totals, and due dates. Create it standalone or pull lines from an approved purchase order to avoid re-keying. Confirming a purchase invoice posts the accrual into accounting—supplier payable, input tax, and expense or inventory (depending on whether items are stock-tracked)—so finance sees the liability when the bill is recognised, not when someone remembers to update Excel.

Print purchase invoices for filing or supplier reconciliation. Filter and search the list by supplier, status, and date like other SCM documents.

Goods received notes (GRNs): stock increases on receipt

Physical arrival is a separate event from billing. A goods received note (GRN) records what actually landed in a warehouse—linked to a purchase order or a purchase invoice (not both on the same GRN). On confirm, the GRN:

• Receives each line into the chosen warehouse and writes stock movements.
• Updates received quantities on the linked PO or purchase invoice lines.
• Posts inventory and GRN receipt entries into the chart of accounts.

Partial receipts are supported: receive less than ordered today, receive the rest on a follow-up GRN. The system blocks over-receipt beyond remaining PO or PI quantities—catching a common warehouse data-entry mistake before stock drifts.

The purchase-to-stock flow in practice

A typical procurement software Pakistan rollout on Wise Supply Chain:

1. Create suppliers and products with correct UoM and tax rates.
2. Raise and approve a purchase order (when POs are enabled) or go straight to a purchase invoice.
3. Confirm the purchase invoice when the supplier bill is valid.
4. Create and confirm a GRN when goods physically arrive—stock and received quantities update together.
5. Review supplier ledger and aging payable reports to plan payments.

For the inventory side of receipts, see SCM inventory management features.

Dashboard and supplier performance

The operations dashboard surfaces supplier performance and purchasing KPIs so managers see which suppliers deliver on time and where open POs or GRNs are stuck. Pair that with supplier payables and aging payable financial reports when planning cash outflows.

Purchasing tied to returns and FBR sales

Purchase returns reference original purchase invoices and issue stock back to suppliers—see our sale & purchase returns features guide. On the sales side, if FBR digital invoicing is enabled, outbound invoices share the same product catalog your buyers ordered through purchasing—one master data spine end to end.

Rollout checklist for purchasing teams

• Import or create suppliers; agree who approves POs.
• Define whether you run PO → PI → GRN or PI → GRN only.
• Train warehouse to confirm GRNs on physical receipt, not on invoice date.
• Reconcile supplier ledger monthly against supplier statements.

Book a free demo or read the supply chain software Pakistan guide and product overview.

Feature availability may vary by plan and configuration (e.g. purchase orders when enabled on your installation). Behaviour described reflects suppliers, purchase invoices, GRNs, and optional purchase orders as currently shipped.