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    <p>The <a href="http://en.wikipedia.org/wiki/Windows_Communication_Foundation" rel="noreferrer">WCF API</a> in .NET handles missing parameters by returning an <code>HTTP 404</code> "Endpoint Not Found" error, when using the <a href="http://msdn.microsoft.com/en-us/library/system.servicemodel.webhttpbinding.aspx" rel="noreferrer">webHttpBinding</a>. </p> <p>The <code>404 Not Found</code> can make sense if you consider your web service method name together with its parameter signature. That is, if you expose a web service method <code>LoginUser(string, string)</code> and you request <code>LoginUser(string)</code>, the latter is not found.</p> <p>Basically this would mean that the web service method you are calling, together with the parameter signature you specified, cannot be found. </p> <blockquote> <p>10.4.5 404 Not Found</p> <p>The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.</p> </blockquote> <p>The <code>400 Bad Request</code>, as <a href="https://stackoverflow.com/questions/3050518/what-http-status-response-code-should-i-use-if-the-request-is-missing-a-required/3050561#3050561">Gert suggested</a>, remains a valid response code, but I think it is normally used to indicate lower-level problems. It could easily be interpreted as a malformed HTTP request, maybe missing or invalid HTTP headers, or similar.</p> <blockquote> <p>10.4.1 400 Bad Request</p> <p>The request could not be understood by the server due to malformed syntax. The client SHOULD NOT repeat the request without modifications.</p> </blockquote>
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    1. POWhat HTTP status response code should I use if the request is missing a required parameter?
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    1. USDaniel Vassallo
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    1. CO+1 for 404 Not Found.
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      1. USEugene Beresovsky
    2. COThis is what CherryPy does by default.
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      1. USDerek Litz
 

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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