Before anything else — let us first understand what a user story exactly is.
User stories are well-formed, short, and brief explanations of the application’s requirements from the end-user’s perspective, written in an informal, natural language. This is a key deliverable used in the software development process to understand user requirements
Generally, the user story is created by a product manager or team member on behalf of the end-user and describes the expected features of the system under development. User stories are created to capture the most important elements of a requirement based on a predefined template.
The most commonly used template in user stories is the connector template. This template describes in one sentence the benefits users expect from their roles, skills, and systems.
With the help of the user stories — the team would also be able to map out the modules and the features required in the application, as the user stories are the best way to communicate your ideas to the developers.
So, if the developer has a comprehensive list of user stories, they can develop and plug your application with all the appropriate features. And if developers have a shortlist of vague user stories, they would add features — which they think would be right for the app.
Therefore, do not risk leaving any room for interpretation. Thoroughly follow the user story. Remember that most teams create a minimal solution that meets all the specified requirements.
Only by clearly and accurately formulating your requirements — you can be sure that the products offered will meet your requirements.