What to Include in a Software Requirements Document Before Development

Why requirements matter before design and development

Many software projects begin with a feature list: login, dashboard, inventory, reports and mobile app. These words sound clear, but they leave important questions unanswered.

Who may edit an old invoice? What happens when stock is unavailable? Which branch can see which customer? How is a return approved? Which report total must match accounts? These decisions affect the database, screens, permissions, testing and cost.

A requirements document brings these questions forward while they are still easier to discuss.

1. Business objective and success condition

Begin with the problem the software must solve. Avoid broad statements such as “digitize the business.” Describe the current difficulty and the expected operational improvement.

Examples include:

• Replace separate sales and stock files with one controlled system
• Reduce repeated data entry between branches and accounts
• Give management a daily view of sales, cash and inventory
• Standardize institute admissions, fees and student records
• Connect customer enquiries with stock checks and vendor follow-up

Also define how the business will judge whether the project is usable. A successful launch may require that cashiers can complete a sale, accounts can reconcile the day and management can access agreed reports.

2. Project scope and boundaries

State what is included in the current phase and what is deliberately excluded. Clear boundaries prevent assumptions from becoming surprise requirements late in development.

For example, phase one may include billing, inventory and purchases but exclude payroll, ecommerce and mobile applications. Excluded items can remain on a future roadmap without being treated as part of the current delivery.

3. User roles and responsibilities

List the people who will use or manage the system. Do not assume that “admin” and “user” are enough.

Possible roles include cashier, branch manager, storekeeper, accountant, procurement officer, sales representative, customer support agent, teacher, doctor, technician, tenant administrator and company administrator.

For each role, describe:

• What the person can view
• What the person can create or edit
• Which actions require approval
• Which branch, department or customer data is visible
• Which reports or exports are allowed

This becomes the starting point for permissions and audit controls.

4. Current workflow

Document how work happens today, including manual steps. The current method may be inefficient, but it contains important business knowledge.

Use a simple sequence. For a purchase workflow:

1. A department requests an item.
2. A manager approves the request.
3. Procurement asks suppliers for availability or price.
4. A purchase order is issued.
5. The store receives and checks quantity.
6. Accounts records the supplier invoice.
7. An authorized person approves payment.

Mark the points where delays, duplication or missing control occur.

5. Required future workflow

Describe the intended process after implementation. Focus on the result of each step rather than the exact button arrangement.

Include normal transactions and decision points. State what should happen after approval, rejection, cancellation, partial delivery or correction.

Where the process changes by business type, branch or customer, explain the condition clearly.

6. Data and master records

List the records the system must maintain. Common examples include products, services, customers, suppliers, employees, branches, warehouses, account heads, vehicles, assets, students or patients.

For each important record, identify:

• Required and optional fields
• Unique identifiers
• Who owns and may change the record
• Whether approval is needed
• How duplicates are prevented
• Whether historical changes must be preserved

Good master data makes transactions and reports more reliable.

7. Transaction rules

Transactions connect the records. Define calculations, statuses and limits.

For a sales invoice, requirements may include quantity, unit, price, discount, tax treatment, payment method, stock effect, customer balance, printing and cancellation rules. For a service job, they may include complaint, diagnosis, assigned technician, parts, labour, status and delivery.

Do not leave formulas described only as “automatic.” State the source values, rounding rule and expected total.

8. Exceptions and uncommon cases

Projects often focus on the normal path and discover exceptions during live use. Include cases such as:

• Partial payment or delivery
• Return after the accounting period has closed
• Duplicate customer or product
• Insufficient stock
• Lost internet connection
• Rejected external API submission
• Cancelled approval
• Employee transfer between branches
• Damaged or expired inventory
• Incorrect opening balance

Define whether the system blocks, warns, requests approval or creates a follow-up task.

9. Reports and management questions

A report name alone is not a complete requirement. “Sales report” could mean total invoices, collected payments, taxable sales, product quantity, gross profit or salesperson performance.

Write the management question each report should answer. Include filters, grouping, date basis, totals, permissions and export requirements.

Where a report must reconcile with another record, state the expected relationship. For example, cashier closing should connect software sales, payment methods, declared cash and differences.

10. Integrations

Identify systems that must exchange information, such as FBR Digital Invoicing, payment gateways, ecommerce platforms, WhatsApp, SMS, attendance devices, accounting software or vendor APIs.

For each integration, document:

• Which system is the source of truth
• Data sent and received
• Trigger and frequency
• Authentication and permission ownership
• Duplicate prevention
• Error and retry handling
• Logs and reconciliation

External availability and rule changes should be treated as project dependencies.

11. Notifications and communication

State which events should produce an email, SMS, WhatsApp message, dashboard alert or internal task. Define the recipient, timing, template owner and whether sending requires approval.

Avoid notifying everyone about everything. Alerts should help someone take action.

12. Data migration

List the information that will move from spreadsheets or an old system. Decide whether the project needs complete transaction history or only master records, opening stock and balances.

Migration requirements should include data cleaning, mapping, sample import, verification, cut-off date and approval of final opening figures.

13. Security, privacy and audit

Identify sensitive data and access restrictions. Requirements may cover individual logins, password policy, two-factor authentication, branch isolation, encryption, backup, activity logs and retention.

State which actions need an audit trail, such as price changes, deleted records, discount approvals, payment edits and permission changes.

14. Performance and availability

Describe realistic usage: number of users, branches, daily transactions, expected growth, devices and internet conditions. State whether offline continuity, mobile access or high-volume import is required.

Performance should be tested against the intended workload rather than judged only with empty demo data.

15. Acceptance tests

Acceptance tests turn requirements into observable results. Each test should include a starting condition, user action and expected outcome.

Examples:

• A cashier sells two items, and stock, payment and receipt totals update correctly.
• A branch manager cannot view another branch’s restricted transactions.
• A rejected API invoice appears with its response and controlled retry option.
• A customer ledger matches the opening balance, invoices, receipts and returns.
• A manager receives the agreed closing report for the selected date and branch.

These tests reduce arguments based on personal expectations at the end of the project.

Keep the document alive

Requirements may become clearer during prototyping and testing. Record approved changes with their effect on scope, delivery and cost. Do not let important decisions remain only inside voice notes or private chats.

A well-maintained requirements document protects both the business and the development team because everyone can trace what was agreed and why.