ERP & software costs

How to write an ERP requirements brief your team can use

Illustration for How to write an ERP requirements brief your team can use

Write ERP requirements as business scenarios with owners, priorities, and acceptance evidence that vendors can demonstrate.

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An ERP requirements document should explain what the business needs to accomplish and how it will recognize a working solution. Organize it around workflows and decisions, then connect those needs to modules and configuration.

Start with a business scenario

Choose a real task, such as receiving an order, purchasing stock, approving an expense, or closing a reporting period. Describe the trigger, people involved, inputs, outputs, and exceptions. State which part of today's process is causing difficulty without prescribing a technical solution too early.

A requirement such as better reporting is too vague to test. A more useful version is: the operations manager can see open orders by promised date, identify missing stock, and trace each total to its source orders.

Use this requirement template

Field What to write
Reference A stable requirement ID
Business owner The person responsible for the outcome
Scenario The task and its trigger
Required behavior What the user or system must do
Priority Essential, useful, or later, with a reason
Acceptance evidence A demonstration or reconciliation that proves it
Dependencies Required records, decisions, or connected systems
Exception What should happen when the ordinary path fails

Give each requirement one main outcome. Large paragraphs that contain several unrelated needs make it hard to estimate work or identify partial delivery.

A requirement should be testable. Business scenario: Describe the task, trigger and people involved. Accountable owner: Name who decides whether the result is useful. Required behavior: State what the user or system must do. Acceptance evidence: Define a demonstration or reconciliation. Dependencies: List the data, decisions and systems needed. Exception path: Specify what happens when the normal path fails.
Workflow guide by Dood System. View full-size infographic.

Example: an approval requirement

For a hypothetical purchasing process, define which role may request a purchase, who may approve it, and what happens if the approver is unavailable. Include the evidence needed in the audit history and the behavior when a request is returned for correction.

The acceptance test should use ordinary user accounts. Demonstrating the process only as an administrator can hide permission gaps that real staff will encounter.

Mark assumptions and unresolved decisions

Record expected data volumes, locations, currencies, integrations, and reporting periods, but distinguish confirmed facts from estimates. If two departments disagree about ownership, keep the issue visible. Software configuration cannot resolve an unmade business decision by itself.

Frappe's implementation guide discusses implementation planning. The template here turns that planning conversation into individual items that a team can demonstrate and accept.

Review the document with the people performing the work, not only project sponsors. Then use the same scenarios for vendor demonstrations, estimates, and acceptance testing. Discuss a focused ERP discovery session with one completed scenario to get started.

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