Editing separate parameters

When using the update method to change an object, there is no need to pass the full set of object parameters. It is sufficient to specify the object ID and the parameters being changed. Values of omitted parameters are not changed.

Note. Before saving the changes in the Yandex Direct database, the validity of the entire object as a whole is checked (not just the parameters that were passed). If an object is invalid, the operation will not be performed with this object.

If a parameter supports the null value, you can reset (clear) the value. See the section The null (nil) value.