When looking at recent activity within the Activity Log, you may notice that one or more changes have been pushed to the publisher without you requesting these changes. Understandably, it may seem that the Platform is making changes on your behalf; however, this is usually not the case.
Additionally, when viewing a specific object’s Settings History (accessible by clicking into an object, such as a keyword, in the grid directly then selecting the History sub-tab), you may notice that a user called System has made changes without your knowledge.
The reason that these System (or possibly Platform Sync ) user jobs appear in the Activity Log is usually that changes have been made on the publisher’s end (with Google Ads, for example) and the Platform is pulling these changes in. Additionally, any changes that you make on the publisher's end will be pulled in during the nightly sync which will result in Activity Log jobs with System or Platform Sync in the user column.
The System user can also appear to be making changes when a job is canceled from the Activity Log. When any job is canceled in this way, the Platform reverts any changes that have (or would have) been made. This causes the System user changes to appear in the object’s Settings History.
The System user can also appear to be making changes as seen in the object's Settings History when a scheduled action set to pause or activate objects has processed. Here's how you can verify that:
Because the presence of this user is by design, there is no fix for it. However, you can confirm that the user is making changes due to one of the reasons explained above.
You can also check if the user is reverting changes due to a canceled job by following these steps: