Appendix F: Prerequisites Schema

The prerequisites.xml file is used to define the prerequisites for an installation. The schema is described in the following section

Prerequisites Schema

The elements of the prerequisites schema are listed in the following table.

Schema Element Description
PrereqResults Root element.
Result The result of a single prerequisite check. There may be 0…nResult elements, one for each prerequisite.
Status The localized description of the status code.
Check The product or component to be checked.
Components The component(s) for which this is a prerequisite. There may be 0…nComponent elements in a Components element.
Component One of the component(s) for which this is a prerequisite.
Description The description of the problem.
Resolution The way the customer may resolve the problem.
In addition, the **Result** element has an attribute **StatusCode**. The possible values of **StatusCode** are 0 (success), 1 (error), 2 (warning). ### Example The following is an example of a prerequisites.xml file.
<?xml version="1.0" encoding="utf-8"?>
<PrereqResults>
    <Result StatusCode="0">
        <Status>Passed</Status>
        <Check>Windows Server 2003 Server</Check>
        <Components>
            <Component>Windows Server Update Services</Component>
        </Components>
    </Result>
    <Result StatusCode="1">
        <Status>Failed</Status>
        <Check>SQL Server 2005</Check>
        <Components>
            <Component>Windows Server Update Services</Component>
        </Components>
        <Description>SQL Server 2005 or later not detected</Description>
        <Resolution>Download the required version from https://www.microsoft.com/downloads/</Resolution>
    </Result>
    <Result StatusCode="1">
        <Status>Warning</Status>
        <Check>SQLINSTANCE_NAME</Check>
        <Components>
            <Component>Windows Server Update Services</Component>
        </Components>
       <Description>This database version cannot be upgraded. Version is too old. </Description>
        <Resolution>Choose another location for the database to keep this one otherwise this database will be overridden. </Resolution>
    </Result>
    …
</PrereqResults>