Purchase Requisition: Meaning, Process, Format, and Manufacturing Importance

A purchase requisition is where purchase control begins.

Before a supplier receives a purchase order, someone inside the business must first say, “We need this.” That request may come from production, maintenance, stores, quality, projects, administration, or management. If the request is informal, buying becomes difficult to control. If the request is structured, the business can check whether the purchase is necessary, whether stock already exists, who approved it, and how urgent it really is.

That internal request is called a purchase requisition.

For manufacturers, purchase requisitions are especially important because material requirements affect production schedules, inventory value, supplier planning, and cash flow. A weak requisition process creates urgent buying, duplicate purchases, stock mismatch, and avoidable production delays.

This guide explains what a purchase requisition is, why it matters, what details it should include, how the process works, and how AICAN Optiwise helps connect requisitions with purchase, inventory, and production.

Note: This article is for general business understanding only. Purchase, accounting, tax, legal, and compliance treatment may vary by company and jurisdiction. Please consult qualified professionals for specific decisions.

What Is a Purchase Requisition?

A purchase requisition is an internal document or request raised by an employee or department to ask the purchase team to buy goods or services.

It is not sent to the supplier. It is used inside the organization for review and approval.

A purchase requisition usually includes:

• requesting department
• item or service required
• quantity
• specification
• required date
• purpose
• estimated cost
• suggested supplier, if any
• priority
• approval status

Once approved, the purchase team may convert the requisition into a purchase order.

Purchase Requisition Meaning in Simple Words

A purchase requisition says:

“We need this item or service. Please review and approve the purchase.”

It helps the business avoid random buying and creates a clear starting point for procurement.

Why Purchase Requisitions Matter

They Control Internal Demand

Not every request should become a purchase. A requisition allows review before money is committed.

They Prevent Duplicate Buying

The purchase team can check stock and pending orders before creating a PO.

They Improve Approval Discipline

Managers can approve based on need, budget, urgency, and value.

They Support Production Planning

Production-critical requirements can be flagged and prioritized.

They Create an Audit Trail

The business can see who requested, who approved, and why the purchase was needed.

Purchase Requisition Process

1. Need Is Identified

A department identifies a requirement. For example, production needs raw material, maintenance needs spare parts, or stores sees stock below reorder level.

2. Requisition Is Raised

The requester fills in item details, quantity, required date, purpose, and priority.

3. Stock Is Checked

Stores or purchase checks whether the item is already available or pending from an existing PO.

4. Approval Is Routed

The request goes to the correct approver based on value, department, item type, or urgency.

5. Purchase Team Reviews

Purchase reviews supplier options, price, lead time, and terms.

6. Purchase Order Is Created

After approval, the purchase team creates a purchase order and sends it to the supplier.

7. Requisition Is Closed or Linked

The requisition is linked with the PO so the business can trace the purchase back to the original need.

Purchase Requisition Format

A practical purchase requisition format should include:

• requisition number
• requisition date
• requester name
• department
• item code
• item description
• specification
• quantity
• unit of measurement
• required date
• purpose or job reference
• available stock
• pending PO quantity
• estimated price
• suggested supplier
• priority level
• remarks
• approval details

Manufacturers should include technical specifications, drawing numbers, grade, machine reference, project reference, or production order reference where needed.

Purchase Requisition vs Purchase Order

A purchase requisition is internal. A purchase order is external.

The requisition requests approval to buy. The purchase order is sent to the supplier after approval.

Example:

• Production raises a purchase requisition for 500 kg of raw material.
• Manager approves it.
• Purchase issues a PO to the supplier.

Both documents are connected, but they serve different purposes.

Common Mistakes in Purchase Requisitions

Vague Item Description

If the requester writes only “pipe” or “bearing,” purchase may order the wrong item. Specifications should be clear.

No Required Date

Without a required date, purchase cannot prioritize properly.

No Stock Check

Requests should be checked against available stock and pending orders.

Too Many Urgent Requests

If everything is marked urgent, nothing is truly prioritized. Urgency should be justified.

Approval Outside the System

Approvals through calls or messages can be lost. A proper system keeps approval history.

How ERP Improves Purchase Requisitions

ERP helps by connecting requisitions with inventory, production, approvals, purchase orders, and reporting.

A connected system can:

• generate requisitions from production needs
• show available stock before buying
• route approvals automatically
• convert approved requisitions into POs
• track pending requisitions
• link PR with PO and goods receipt
• maintain audit records
• support purchase planning

Optiwise by AICAN helps manufacturers bring purchase requisitions into a connected workflow, reducing manual follow-ups and improving material planning.

Founder’s Note

At AICAN, we see purchase requisitions as a simple but powerful control. They stop purchase from becoming reactive and help the business understand why a material is needed before money is committed.

AICAN Optiwise helps manufacturers connect requisitions with stock, production, approvals, and purchase orders. When the request itself is clear, the entire purchase process becomes cleaner.

FAQs

What is a purchase requisition?

A purchase requisition is an internal request raised by a department to ask for approval to purchase goods or services.

Is a purchase requisition sent to the supplier?

No. It is an internal document. The purchase order is sent to the supplier after approval.

What details should a purchase requisition include?

It should include requester, department, item details, quantity, required date, purpose, stock status, estimated cost, priority, and approval details.

Why is purchase requisition important in manufacturing?

It helps control material demand, avoid duplicate purchases, support production planning, and create an approval trail.

How does Optiwise help with purchase requisitions?

Optiwise by AICAN connects purchase requisitions with inventory, production requirements, approvals, purchase orders, and reports.