Campaign bidding strategy: In the campaign settings, it is "Dynamic bids - down only" by default but you can change it

Budget: You can change it at the level of your account setting without consequences. Beware the algorithm does not take the account-level budget you set in its predictions!

Your own campaign: We recommend you pause them

Budget: You can change it at the level of the campaign or portfolio without consequences but the algorithm will overwrite it later on.

The bids: If you do, the algorithm will learn about corrupted data and its optimization will be compromised.

Keywords and product targeting: If you do, the algorithm will learn about corrupted data and its optimization will be compromised.

Negative targeting: If you do, the algorithm will not optimize the sales well anymore and it might miss good targets

The campaigns name: if you do, the algorithm will not recognize its own campaigns any more

Change a campaign from one portfolio to another: if you do, the algorithm will not recognize its own campaigns anymore

Change a portfolio: if you do, the algorithm will not recognize its own campaigns any more