AdDistribution Element
If you remove the "Content" ad distribution type from an ad group, adCenter preserves the ContentMatchBid value for all keywords in the ad group. If you later add the "Content" distribution type back to the same ad group, the keywords have the previous value for the ContentMatchBid property.
EndDate Element
When adding an ad group, if no end date is specified, the ad group does not have an end date.
When updating an ad group, to set no end date for the ad group, set this element to a date equal to or later than January 2, 2050.
NegativeKeywords Element
Negative keywords are keywords that, if they are included in a search, prevent a match with the ad group's keywords. For more information, see Negative Keywords.
This element must contain an empty array if no negative keywords are specified. Negative keywords can be specified only for a keyword that has a broad or phrase match type.
The maximum length of a single string in this array is 100 characters. The maximum combined length for all strings in this array is 1,022 characters.
StartDate Element
When adding an ad group, if no start date is specified, the current date on the server is used as the start date.
Status Element