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40 Examples of Functional Requirements

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Functional requirements state what a product, service or work item will do. This is typically the core interest of business units that are sponsoring a project such that it is common for the business to offer functional requirements while other teams such as quality assurance or operations may offer non-functional requirements. The following are common examples of functional requirements.
Adaptations
The seats can be folded down to expand the cargo area.
Audit Trail
The system will log user IP addresses.
Cancellation
The user can cancel at anytime and the application will be discarded.
Capacity
The device will have storage of 900 terabytes.
Comfort
A variety of soft to firm pillows will be provided in each room.
Compliance
The site will comply with our information security guidelines and audit process.
Content
If the customer turns off recent searches the following message will be displayed "Recent searched will no longer be captured, recorded or stored."
Convenience
Guests will have the option to check out from a kiosk.
Customer Experience
The ball will make a whistling sound as it flies through the air.
Customization
The search screen will list the five most recent searches from the account.
Data Liberation
Users will be able to export their data to a usable format and close their account.
Efficiency
The mobile device will operate for 7 days or more on a single charge with only the basis operating system running.
Extensibility
Memory will be user upgradable.
Features
A prominent one-touch operation button will heat food to 150°F.
Form Factor
The product will be in a 20oz stout glass bottle.
Formulations
The product will have all natural ingredients.
Game Mechanics
When players drive off road their controller will provide an appropriate level of tactile feedback.
Help
Buttons will have a small "?" icon beside them that will explain the button in detail when you hover over it.
Inputs
The form will accept a username and password.
Interoperability
The page will be printable.
Look & Feel
The design will comply with the branding guide.
Materials
The doors of the rooms will be solid wood.
Options
Users will be able to set the skill level of the non-player characters.
Outputs
The form will communicate a transaction id to the customer.
Packaging
The product will be packaged in a cardboard box that is not taped or glued shut.
Performance
The vehicle will have a 0-60 time of 2.1 seconds or less.
Personalization
Customers can turn on and off each type of recommendation on their home screen.
Privacy
The recent searches feature can be turned off. In this case, this data will not be stored.
Quality
The exterior will have a deep two-tone finish.
Reporting
The energy yield of the system will be reported on a daily and monthly basis.
Rules
Bookings can't be rescheduled online if the applicable flight is due to depart within 6 hours or less.
Safety
The doors of the rooms will be 90 minute fire rated.
Security
Customer data will be encrypted at all times in storage, use and transmission.
Sensory Requirements
The paint will have no detectable odor at application time.
Service Environments
The lobby will provide at least 34 plush seats that are oriented for visibility of the entire lobby.
Structure
All pages will be linked from the home page such that the site has a depth of 2 levels.
Universal Design / Accessibility
The elevator door will be at least 2 meters wide.
Usability
The elevator will not beep or produce an error related sound when the open door button is held for an extended period of time.
Validation
The password must be 10-200 characters long.
Workflow
Managers will be able to delegate approval authority in the system.

Discussion

The line between functional and non-functional requirements is different for each industry, product and service. As a general rule, if a requirement is defined by your business stakeholders it can be viewed as functional. For example, information security is often considered non-functional. However, if your business is related to security and your business is defining how security should function then these are functional requirements.

Summary

Functional requirements are specifications of the capabilities of a product, service, environment or process.
Overview: Functional Requirements
Type
Definition
Statements or specifications of what a product, service or work item will do.
Related Concepts
Next: Business Requirements
More about requirements:
Product Functions
Project Requirements
Requirements
Service Requirements
Stakeholder Requirements
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