data (Required). It is an array of project fields. For example, in case the data format is XML, you should post something like this:

<data>
    <item> <!-- update projects -->
        <id>1919191</id> <!-- id of the project to update -->
        <budget>100000</budget>
    </item>
    <item>
        <id>19198192</id>
        <summary>Project #2</summary>
        <priority>1</priority>
        <plan_start>2008-09-02T08:00:00</plan_start>
        <deadline>2008-09-04T17:00:00</deadline>
        <budget>200000</budget>
    </item>
</data>

In case of JSON, you should submit an array of objects with the same properties.

Fields are same as those for the create-projects function but all fields are optional. In addition the following fields are required: