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

<data>
    <item> <!-- update tasks -->
        <id>101311</id> <!-- id of the task to update -->
        <plan_start>2008-09-02T08:00:00</plan_start>
    </item>
    <item>
        <id>100</id> <!-- id of the task to update -->
        <summary>Task #2</summary>
        <plan_start>2008-09-03T08:00:00</plan_start>
        
    </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-tasks function but all fields are optional. In addition the following fields are required: