This means that your newly added campaign ad(s) do not seem to match the current campaign settings.
Example: Your initial campaign ads link to one website or product but your new campaign ads link to a different website or product and need an alternate branding text.
Example: Your initial campaign ads are about travel but your new campaign ads are about finance and need to be placed in an alternate category.
How To Fix
Create a new campaign for the ads that do not match the settings of your current campaign.
To learn more about branding text guidelines, click here.
To learn how to fix and resubmit your campaign or campaign ad, click here.