Purchase Requisition Process: Example and Improvement Guide

Purpose and scope

The purchase requisition process covers the internal request and approval steps that happen before a purchase order is issued to a supplier. It begins when an employee identifies a need for goods or services and ends when an approved requisition is handed off to procurement or purchasing for sourcing and order placement. This is distinct from the purchase order and payment steps that follow, though the two are closely linked and a weak requisition process tends to create problems downstream.

Requisition processes are worth examining closely because they sit at the point where budget control, spend policy, and day-to-day operational need intersect. A process that is too loose invites uncontrolled spending, while a process that is too heavy slows down legitimate purchases and encourages employees to find workarounds, such as expensing items personally rather than going through the formal process at all.

Typical roles

• Requester: identifies the need, specifies what is required, and submits the requisition.
• Budget owner or cost center manager: confirms the purchase fits within available budget.
• Approving manager: reviews and approves or rejects the requisition based on value and policy.
• Procurement or purchasing team: reviews approved requisitions for sourcing options and converts them into purchase orders.
• Finance: reviews requisitions above certain thresholds or involving new spend categories.

Example as-is flow

Common decisions

The requester decides how to specify the need, including quantity, urgency, and preferred supplier, which shapes everything downstream. The budget owner decides whether the requisition fits within available budget or requires an exception, such as drawing against a future period or a different cost center. The approving manager decides whether the business justification is adequate and whether the requisition aligns with departmental priorities. Where a requisition exceeds a value threshold or falls into a controlled spend category, a decision is made on whether it needs a second approval from a more senior manager or finance. Procurement makes a further decision about whether the requester's preferred supplier is appropriate or whether an existing contracted supplier should be used instead.

Common exceptions and rework

A frequent source of rework is a requisition submitted with vague or incomplete specifications, which the approving manager or procurement sends back for clarification before it can proceed. Budget checks sometimes reveal that a cost center is over budget, forcing the requester to seek an exception approval or revise the request downward. Requisitions occasionally arrive at procurement specifying a supplier that already has a preferred or contracted alternative, requiring procurement to go back to the requester to confirm whether the change is acceptable. Value thresholds create their own exception pattern, since a requisition initially submitted just under a threshold sometimes grows once actual quotes come in, requiring it to be resubmitted through the higher approval path partway through processing. Urgent requests that bypass the normal sequence, common when a business need is time-sensitive, create after-the-fact approval work and can undermine confidence in the process's controls.

Likely bottlenecks

Manager approval is a common bottleneck, particularly when approvers treat requisition review as a lower priority than their core responsibilities and let requests accumulate before working through them in a batch. A second approval step for higher-value requisitions can compound this if it is routed to a small number of senior approvers or finance staff who are shared across many requesting teams. Budget checks can also bottleneck near the end of a budget period, when cost center owners are fielding a higher volume of requests and exception approvals than usual. Sourcing review at procurement can slow down if procurement lacks visibility into which requisitions are urgent, treating all approved requisitions with the same priority regardless of business impact.

Process improvement options

Providing a clear, structured requisition form with required fields reduces the back-and-forth caused by vague specifications. Giving requesters visibility into remaining cost center budget before they submit a request reduces the number of requisitions that fail the budget check unexpectedly. Reviewing approval thresholds periodically to confirm they still reflect genuine risk, rather than historical habit, can reduce the number of requisitions routed through a second approval layer that adds little control value. Establishing a defined fast path for genuinely urgent requests, rather than allowing informal bypasses, keeps urgent needs moving without undermining the controls that apply to routine purchases.

Conventional automation opportunities

Budget checks against a known cost center balance, routing requisitions to the correct approver based on value and category, and notifying a requester automatically when their requisition is approved, rejected, or needs clarification are all well suited to conventional rules-based automation. Automatically flagging a requisition that names a non-contracted supplier when a contracted alternative exists is another clear, rules-based automation candidate, since it depends on comparing structured data rather than interpreting anything.

Possible AI scenarios

A few requisition tasks carry enough variability to be worth testing with an AI-based approach, framed as a scenario rather than a guaranteed improvement. One scenario is an AI agent that reviews free-text business justifications and flags requisitions where the justification appears weak or inconsistent with the requested item, prompting earlier clarification. Another is an AI agent that reads requisition descriptions and suggests the most likely correct spend category or supplier match, reducing manual classification work. A third scenario worth evaluating is an AI-generated summary of a requester's justification and history for an approver reviewing a high volume of requisitions, helping them work through a queue faster without changing the approval decision itself. Each of these should be simulated against the current process before assuming it produces a meaningful improvement.

Metrics to compare

How Processfix fits in

Processfix allows a procurement or finance team to build an editable model of the requisition process from a plain-language description or an existing policy document, then simulate a realistic mix of requisitions to see where approval queues, budget exceptions, and sourcing review actually create delay. Improve and Add AI scenarios can be compared against the locked baseline on cycle time, throughput, and labor effort, giving the team a documented basis for deciding what changes are worth pursuing before anything is built.