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<p>The <b>user requirement(s) document</b> (URD) or <b>user requirement(s) specification</b> (URS) is a document usually used in <a href="Software_engineering" title="Software engineering">software engineering</a> that specifies what the user expects the software to be able to do.

</p><p>Once the required information is completely gathered it is documented in a URD, which is meant to spell out exactly what the software must do and becomes part of the <a href="Contractual_agreement" class="mw-redirect" title="Contractual agreement">contractual agreement</a>. A customer cannot demand features not in the URD, while the developer cannot claim the product is ready if it does not meet an item of the URD.

</p><p>The URD can be used as a guide for planning cost, timetables, milestones, testing, etc. The explicit nature of the URD allows customers to show it to various <a href="Stakeholder_(corporate)" title="Stakeholder (corporate)">stakeholders</a> to make sure all necessary features are described.

</p><p>Formulating a URD requires <a href="Negotiation" title="Negotiation">negotiation</a> to determine what is technically and economically feasible. Preparing a URD is one of those skills that lies between a <a href="Science" title="Science">science</a> and an <a href="Art" title="Art">art</a>, requiring both software technical skills and <a href="Interpersonal_skills" class="mw-redirect" title="Interpersonal skills">interpersonal skills</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>

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<div class="mw-heading mw-heading2"><h2 id="Pharmaceutical_Industry_Use">Pharmaceutical Industry Use</h2></div>

<p>User Requirement Specifications (URS) are important in the pharmaceutical industry for regulatory and business purposes. URS support regulatory and business considerations for processes, equipment, and systems. For example, a business consideration could be the foot print of equipment prior to installation to ensure there is enough room. Likewise, a regulatory consideration could be the ability for the system to provide an <a href="Audit_trail" title="Audit trail">audit trail</a> to ensure the system meets <a href="Good_manufacturing_practice" title="Good manufacturing practice">regulatory requirements</a>.

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<div class="mw-heading mw-heading3"><h3 id="URS_writing_pitfalls">URS writing pitfalls</h3></div>

<p>Commonly, when companies are purchasing systems, processes, and equipment - not everything is considered. URS ensure everything is considered and the supplier provides the components, features, and design required to meet the company needs. By considering more and having the components, features, and design required, the system, process, or equipment can be aligned with company interests and easily integrated.

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<ul><li><a href="Product_requirements_document" title="Product requirements document">Product requirements document</a></li>

<li><a href="Market_requirements_document" title="Market requirements document">Market requirements document</a></li>

<li><a href="Requirements_management" title="Requirements management">Requirements management</a></li>

<li><a href="Use_case_survey" title="Use case survey">Use case survey</a></li></ul>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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</style><cite id="CITEREFRobertsonJames_Robertson" class="citation book cs1">Robertson, Suzanne; James Robertson. <i>Mastering the Requirements Process</i> (3rd ed.). Addison-Wesley Professional. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0321815742</bdi>.</cite></span>

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<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="https://www.iso.org/standard/72189.html">ISO 25065 "User requirements specification"</a></li></ul>

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