Update: Ad Exchange will be affected by the downtime as well. Please see below for details.

As previously mentioned, we have an upcoming AdWords, Ad Exchange, and DFP service outage. This will occur on Saturday, September 22 -- AdWords, Ad Exchange, and DFP systems will be unavailable from approximately 10:00 am to 8:00 pm Pacific Time (17:00 Saturday to 03:00 Sunday GMT) due to system maintenance.

During this time, your campaigns will continue to run as usual (with the settings you established as of 10am PST), but you won’t be able to make SOAP API calls or download reports. Requests to the AdWords API will fail with an HTTP 50x error during the maintenance window. Please also keep in mind that any automated rules scheduled during this time will not run and AdWords scripts will not execute during this period. We encourage you to verify your campaign settings prior to the outage.

Ad Exchange
During this time, your ad serving will continue to run per changes made prior to downtime period, but you will not be able to make API calls to Ad Exchange Buyer SOAP API. On Ad Exchange Buyer REST API, only the Direct Deals related API calls will be affected. For the Ad Exchange Real-Time Bidding Protocol, you will not be able to make changes to pre-targeting settings, everything else should continue to run as usual.

As mentioned above, ad serving will continue to run per changes made prior to the downtime period. If you use the audience feature in your network, any API call to the AudienceSegmentService service will fail with a SegmentError.UNEXPECTED_ERROR error. Also, if you target any audience segments in your line items, any calls to LineItemService, ForecastService, or LineItemCreativeAssociationService that involve those line items will fail.

We apologize for any inconvenience, and appreciate your patience as our engineers work to keep AdWords, Ad Exchange, and DFP running smoothly.