Save time - use a templateFor the actual document itself, using a functional specification document template is a no-brainer. In fact, we’ve even included a few functional specification document examples below that you can download and fill in immediately. <img class=" webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-documents-template-save-time.png" alt="Functional specification documents - timesaver, hourglass"> These templates already come with a table of contents and many come with all of the sections and headers you will need. From there, all you need to do is edit each field to include the relevant information from your own project. Most of them can even be copied and pasted into your favorite word processing tool. Create your use cases and user scenariosAs we mentioned above, you’ll need to have some use cases ready to add in to your functional specification document. These explain the rationale for each feature and provide some context as to how the feature should work. It doesn’t have to be a big long story, just something that highlights the problem the feature will solve. Imagine the following use case for a car rental app: “User goes to a parking lot only to discover the car they reserved isn’t there. They check the reservation on our app which tells them the car still hasn’t been returned by the previous user and offers them another vehicle in the parking lot at a reduced price. The user can then choose to accept that vehicle or reject it. “ Create your user flowsThe user flow will show how the user case and scenarios translates to the product. For this section, you should include a diagram of the different screens of your mockup or prototype to show how the user will navigate through your app. <img class=" webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-documents-user-flow.png" alt="Functional specification documents - user flow of an ecommerce"> In these flows, you should also make sure you include alternate flows and exception flows. Learn more about how to create user flows in Justinmind with our tutorial on the Scenarios module. The alternate flows might demonstrate the different ways the user can arrive at the car unavailable screen – either via a tapping on a notification or by opening the app and navigating to booking. An exception flow would be where the user navigates to the wrong part of the app, such as the “reserve new vehicle section”. Specify the product’s post conditionThe post condition will indicate the state of the app’s system after running a use case. In the case of the car rental app we mentioned above, the product’s post condition will depend on whether the user selects the new vehicle or not. If they do, the rental timer will begin. If not, the user might be returned to the booking screen. Include a link to prototype, CSS and assetsThe functional specifications document is also where you should include a link to your wireframe or prototype, as well as to your shared library of assets and any extra deliverables that will aid the developers, such as CSS stylesheets and element spacing and padding and color codes. Define a timeline for user testing and product roll-outYou may include a timeline or roadmap that establishes when user testing occurs, for example, after each feature design. Additionally, you may specify at what point you will have reached the MVP stage of your product that you will use with early adopters. <img class=" webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-documents-roadmap-gantt.png" alt="Functional specification documents - timeline roadmap using Gantt chart"> Lastly, once the developer has coded all of the feature specifications, then you have reached the end product. However, most of the time there will be some scope for further future iterations of the product in the form of features, new versions and updates. In this case, the cycle is merely repeated, for which you will start with a brand new requirements statement and flesh out a new feature specification document. Did you know that you can create your own functional specification document template with Justinmind? Find out how to do it in our tutorial on creating specifications templates. Functional specification document templatesHere are some great examples of functional specification documentation that you can also use as templates to start writing up your own. Quick and easy and no having to start everything from scratch! 1. Stanford universityThis functional specification document template from Stanford University is a 10-page document template that contains a complete table of contents with 10 items and an appendix. <img class=" webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-document-stanford.png" alt="Functional specification document - Stanford University"> It ticks all the boxes of a complete functional specification document in that it contains risks and assumptions, project scope, business need, functional specifications and actors (users in use cases). There’s even a suggested part of the document to leave a link to your mockup or prototype, as well as a table for the development team to fill in ticketing issues. 2. Smartsheet website functional requirements templateIf it’s a website you’re creating, be it an ecommerce or a blog, and you’re looking for a basic template – this functional specification document template from Smartsheet is the answer. This short template comes with questions that ask you to write in the details about your planned website without any technical knowledge required. It includes sections such as the purpose and business goals of the website, the target user personas and the organization of the website. <img class=" webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-document-smartsheet.png" alt="Functional specification document - Smartsheet"> It also has a section prompting you to sketch out the information architecture, along with how the features of the website should behave, as well other useful sections such as competitors’ websites. 3. PMP NextGenIf you’re looking for an exhaustive, well-structured template that has everything logically laid out and easy to find, then this is the functional specification document from the Project Management Institute you want to be copying. It’s based on a PMP software system to be used by pharmacists for prescription reporting. <img class=" webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-document-pmp.png" alt="Functional specification document - PMP NextGen"> It serves as a brilliant example of how to integrate use cases, screen mockups and user flows in one document. It’s clear hierarchical numerical layout means that anyone who reads the document can easily navigate to any element within the document using the index. 4. klariti.comKlariti is a website that offers various templates for sale for the many different document deliverables needed if you work in software, web and app development. They offer documents for software testing, development, business process design and case studies. <img class=" webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-document-klariti.png" alt="Functional specification document - Klariti"> Klariti’s 27-page functional specification document template comes in MS Word format. It helps you to define how a piece of software will function and how it will behave when the user provides it with certain inputs, or when certain conditions arise out of a specific situation. The Klariti template lets you enter in specifications for functions involving data manipulation, data processing, calculations, conditions and more. It’s available on their site for $9.99. 5. Almooc.comThis functional specification document template by Almooc is 11-pages and also comes with an appendix and glossary section where you can fill in special terms and abbreviations for your product. <img class=" webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-document-almooc.png" alt="Functional specification document - Almooc"> It includes five major sections, starting with the introduction that covers the purpose, scope, background and constraints. That section is followed by the methodology and then the functional requirements, where you lay down the context, user requirements and user flow diagrams. In the last section you’ll add in the UI requirements, system configuration requirements, data conversion and operational requirements – basically anything surplus to the functional specifications. Visualize functional specifications and generate documentsTest out functional specifications with prototypesDid you know that you can actually test out your functional specifications and validate them when you reach the prototype stage? Using Justinmind, you can quickly and easily test out your product’s functionality on your users before you get to the coding stage by using it in conjunction with integrated tools such as UserTesting and Hotjar. That’s just what one of our clients, Judit Casacuberta Bagó from Scytl does! Judit uses the Justinmind Events system to add complex interactions allowing her to recreate a workflow based on requirements. This in turn allows her and the team to evaluate how each touch point impacts the product as a whole. Her team then exports their prototypes to HTML. Subsequently, Judit typically walks her client through the main workflows, target users and the feature functionalities. Requirements moduleWhen it comes to requirements generation and functional specification documentation, you can also use a prototyping tool, such as Justinmind. Because prototyping tools are used before source code is written, the ability to generate documentation automatically is both useful and quick. Quick because you don’t need to spend time creating lengthy documents and useful because your developer will be able to understand exactly what you want. In the Justinmind interface, there’s a tab on the top right called Requirements. Here in the requirements module, you’ll find a comprehensive view of all the Requirements, including version histories, related components and comments. <img class="has-caption webpexpress-processed" width='100%' src="https://assets.justinmind.com/wp-content/uploads/2020/08/functional-specification-documents-requirements-module-justinmind.png" alt="Functional specification documents - Justinmind Requirements module"> Requirements module in Justinmind The widgets you place on your canvas can be turned into requirements, simply by right clicking on them. These features enable teams to work in a truly collaborative manner, which is handy if you ever want to reach a consensus. It’s also possible to categorize requirements using colors and labels which results in a stronger grip on version control (because there’s nothing worse than being lost in twelve different versions of the same thing). To give your entire team full visibility and enhance collaboration, Justinmind lets you effortlessly integrate with JIRA, too. A click of the button (or more precisely: File > Export to Document) and you’ll have your documentation — visuals and all! The takeawayBest practice tells us that generating documentation will save you time, money and possibly work relationships. Functional specification documentation keeps all team players on the same page, working from one source of truth. Deviating from that can result in a poor project and frustrated individuals. So for the benefit of everyone’s stress levels, it’s best to create a well-thought out functional specification document!
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