Three developers quote for the same project and the prices are far apart. Usually that is not greed or cheapness. Each developer imagined a different system, because the brief was one paragraph on WhatsApp. A short requirements document fixes that, and it is the single most useful thing an owner can prepare before hiring anyone.
What is a requirements document?
It is a plain description of what the software must do for your business. Formal versions are called SRS documents and can run to many pages. For a small or medium business, a clear two to six page document written in everyday language is better. It is written for the developer, but it is also a check for you: if you cannot describe a workflow, the software will not fix it.
What should the document include?
| Section | What to write | Example |
|---|---|---|
| The problem | What is going wrong today and what it costs | Stock counts never match; we lose sales on items we think we have |
| Users and roles | Who uses it and what each may do | Cashier sells, manager approves discounts, owner sees profit |
| Workflows | Each process, step by step, as it happens now | Order on WhatsApp, challan, delivery, invoice, recovery |
| Reports | The questions you want answered | Which customers owe more than 60 days? |
| Data | What exists and where | Item list in Excel, customer balances in a register |
| Limits | Deadline, devices, languages, budget range, integrations | Must work on Android phones, Urdu bills, FBR invoicing |
How do you write the workflows?
Follow one real transaction from start to finish and write each step as a short sentence: who does it, what they record, what happens next. Include the exceptions: returns, partial deliveries, a customer who pays half. Developers handle the normal path easily; the exceptions are where systems fail. Our guide on manual systems vs ERP shows what a working day looks like on both sides.
How do you write it, in order?
Write the problem in one paragraph
Say what is going wrong and why it matters now.
List users
Name every role and what each must see and must not see.
Walk three core workflows
Write the steps of the three processes that matter most, with their exceptions.
Name ten reports
Write each as a question the report must answer.
Collect samples
Attach a real invoice, challan, register page or Excel sheet, with private data removed.
State the limits
Deadline, devices, languages, integrations and the budget range you have in mind.
What should you leave out?
Do not choose the technology or draw every screen. Say "the manager must approve discounts above a limit", not "add a yellow button". A good developer will propose screens, and in our process every screen is shown to you before it is built. Leave out features you might want one day; mark them as later so they do not inflate the first quote. Our ERP modules guide helps separate the first phase from the rest.
What happens after you send it?
A serious developer replies with questions. That is a good sign. Then expect a discovery session, a written scope and a quote split into milestones. If the quote arrives in an hour with no questions, the developer has not read your document. Our guide on fixed price vs time and materials explains how the scope turns into a contract.
Can you help us write it?
Yes. Discovery is the first stage of every custom ERP or web application project we take on, and the document it produces is yours to keep, even if you build elsewhere. The Sea Keepers ERP began with exactly this kind of workflow walk-through. Book a demo to start.
Questions people ask
How long should a requirements document be?
For a small or medium business, two to six pages is usually enough. Length matters less than clear workflows, user roles and the reports you need.
Do I need technical knowledge to write one?
No. Write how your business works in plain language. The developer's job is to turn that into a technical design and show it back to you.
Should I include a budget?
Yes, a range helps. It lets the developer suggest what fits in the first phase instead of quoting for everything and losing you on price.
What if my requirements change later?
They will, a little. Agree in the contract how changes are priced and approved. A clear first document keeps those changes small.
Can I send the same document to several developers?
Yes, and you should. The same document makes quotes comparable, and the questions each developer asks tell you how carefully they read it.
